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137928480 = 25351716903
BaseRepresentation
bin10000011100010…
…01111100100000
3100121112111022020
420032021330200
5240302202410
621404141440
73263241564
oct1016117440
9317474266
10137928480
1170947788
123a237880
13227634b1
14144656a4
15c197a70
hex8389f20

137928480 has 96 divisors (see below), whose sum is σ = 460059264. Its totient is φ = 34615296.

The previous prime is 137928451. The next prime is 137928523. The reversal of 137928480 is 84829731.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×1379284802 = 38048531190220800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292 + ... + 16611.

It is an arithmetic number, because the mean of its divisors is an integer number (4792284).

Almost surely, 2137928480 is an apocalyptic number.

137928480 is a gapful number since it is divisible by the number (10) 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 137928480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230029632).

137928480 is an abundant number, since it is smaller than the sum of its proper divisors (322130784).

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

137928480 is a wasteful number, since it uses less digits than its factorization.

137928480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16938 (or 16930 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 137928480 is about 11744.2956366059. The cubic root of 137928480 is about 516.6756367965.

The spelling of 137928480 in words is "one hundred thirty-seven million, nine hundred twenty-eight thousand, four hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 17 20 24 30 32 34 40 48 51 60 68 80 85 96 102 120 136 160 170 204 240 255 272 340 408 480 510 544 680 816 1020 1360 1632 2040 2720 4080 8160 16903 33806 50709 67612 84515 101418 135224 169030 202836 253545 270448 287351 338060 405672 507090 540896 574702 676120 811344 862053 1014180 1149404 1352240 1436755 1622688 1724106 2028360 2298808 2704480 2873510 3448212 4056720 4310265 4597616 5747020 6896424 8113440 8620530 9195232 11494040 13792848 17241060 22988080 27585696 34482120 45976160 68964240 137928480