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80913384 = 2333521719
BaseRepresentation
bin1001101001010…
…10001111101000
312122020211022000
410310222033220
5131203212014
612010131000
72001516036
oct464521750
9178224260
1080913384
1141745472
1223120a60
13139c0056
14aa63556
157184509
hex4d2a3e8

80913384 has 64 divisors (see below), whose sum is σ = 225504000. Its totient is φ = 26881920.

The previous prime is 80913383. The next prime is 80913397. The reversal of 80913384 is 48331908.

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

It is not an unprimeable number, because it can be changed into a prime (80913383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112177 + ... + 112895.

It is an arithmetic number, because the mean of its divisors is an integer number (3523500).

Almost surely, 280913384 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 80913384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112752000).

80913384 is an abundant number, since it is smaller than the sum of its proper divisors (144590616).

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

80913384 is a wasteful number, since it uses less digits than its factorization.

80913384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1255 (or 1245 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 80913384 is about 8995.1867129037. The cubic root of 80913384 is about 432.5205915330.

The spelling of 80913384 in words is "eighty million, nine hundred thirteen thousand, three hundred eighty-four".

Divisors: 1 2 3 4 6 8 9 12 18 24 27 36 54 72 108 216 521 719 1042 1438 1563 2084 2157 2876 3126 4168 4314 4689 5752 6252 6471 8628 9378 12504 12942 14067 17256 18756 19413 25884 28134 37512 38826 51768 56268 77652 112536 155304 374599 749198 1123797 1498396 2247594 2996792 3371391 4495188 6742782 8990376 10114173 13485564 20228346 26971128 40456692 80913384