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805028832 = 253231372437
BaseRepresentation
bin101111111110111…
…100001111100000
32002002210200221200
4233332330033200
53122041410312
6211514321200
725643426556
oct5776741740
92062720850
10805028832
11383466093
121a5729200
13caa23b2a
1478cb7bd6
154aa1c0dc
hex2ffbc3e0

805028832 has 144 divisors (see below), whose sum is σ = 2428013952. Its totient is φ = 252564480.

The previous prime is 805028821. The next prime is 805028839. The reversal of 805028832 is 238820508.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805028839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 329118 + ... + 331554.

It is an arithmetic number, because the mean of its divisors is an integer number (16861208).

Almost surely, 2805028832 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 805028832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1214006976).

805028832 is an abundant number, since it is smaller than the sum of its proper divisors (1622985120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

805028832 is a wasteful number, since it uses less digits than its factorization.

805028832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2521 (or 2510 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 805028832 is about 28373.0300109100. The cubic root of 805028832 is about 930.2588526764.

The spelling of 805028832 in words is "eight hundred five million, twenty-eight thousand, eight hundred thirty-two".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 31 32 36 37 48 62 72 74 93 96 111 124 144 148 186 222 248 279 288 296 333 372 444 496 558 592 666 744 888 992 1116 1147 1184 1332 1488 1776 2232 2294 2437 2664 2976 3441 3552 4464 4588 4874 5328 6882 7311 8928 9176 9748 10323 10656 13764 14622 18352 19496 20646 21933 27528 29244 36704 38992 41292 43866 55056 58488 75547 77984 82584 87732 90169 110112 116976 151094 165168 175464 180338 226641 233952 270507 302188 330336 350928 360676 453282 541014 604376 679923 701856 721352 811521 906564 1082028 1208752 1359846 1442704 1623042 1813128 2164056 2417504 2719692 2795239 2885408 3246084 3626256 4328112 5439384 5590478 6492168 7252512 8385717 8656224 10878768 11180956 12984336 16771434 21757536 22361912 25157151 25968672 33542868 44723824 50314302 67085736 89447648 100628604 134171472 201257208 268342944 402514416 805028832