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379081680 = 24352336779
BaseRepresentation
bin10110100110000…
…101001111010000
3222102022100022020
4112212011033100
51234021103210
6101341011440
712252066255
oct2646051720
9872270266
10379081680
11184a8874a
12a6b53b80
13606c91b3
14384bb42c
1523430770
hex169853d0

379081680 has 80 divisors (see below), whose sum is σ = 1180370880. Its totient is φ = 100639744.

The previous prime is 379081669. The next prime is 379081693. The reversal of 379081680 is 86180973.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×3790816802 = 287405840223244800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 52531 + ... + 59309.

It is an arithmetic number, because the mean of its divisors is an integer number (14754636).

Almost surely, 2379081680 is an apocalyptic number.

379081680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 379081680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (590185440).

379081680 is an abundant number, since it is smaller than the sum of its proper divisors (801289200).

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

379081680 is a wasteful number, since it uses less digits than its factorization.

379081680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7028 (or 7022 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 379081680 is about 19470.0200308063. The cubic root of 379081680 is about 723.7317056833.

The spelling of 379081680 in words is "three hundred seventy-nine million, eighty-one thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 120 233 240 466 699 932 1165 1398 1864 2330 2796 3495 3728 4660 5592 6779 6990 9320 11184 13558 13980 18640 20337 27116 27960 33895 40674 54232 55920 67790 81348 101685 108464 135580 162696 203370 271160 325392 406740 542320 813480 1579507 1626960 3159014 4738521 6318028 7897535 9477042 12636056 15795070 18954084 23692605 25272112 31590140 37908168 47385210 63180280 75816336 94770420 126360560 189540840 379081680