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137883680 = 25511157499
BaseRepresentation
bin10000011011111…
…11000000100000
3100121110012211222
420031333000200
5240244234210
621403154212
73262664144
oct1015770040
9317405758
10137883680
1170917060
123a215968
1322748c9c
1414453224
15c189655
hex837f020

137883680 has 96 divisors (see below), whose sum is σ = 358344000. Its totient is φ = 49720320.

The previous prime is 137883637. The next prime is 137883701. The reversal of 137883680 is 86388731.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 276071 + ... + 276569.

It is an arithmetic number, because the mean of its divisors is an integer number (3732750).

Almost surely, 2137883680 is an apocalyptic number.

137883680 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 137883680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179172000).

137883680 is an abundant number, since it is smaller than the sum of its proper divisors (220460320).

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

137883680 is a wasteful number, since it uses less digits than its factorization.

137883680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682 (or 674 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 137883680 is about 11742.3881727696. The cubic root of 137883680 is about 516.6196909539.

It can be divided in two parts, 1378 and 83680, that added together give a palindrome (85058).

The spelling of 137883680 in words is "one hundred thirty-seven million, eight hundred eighty-three thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 11 16 20 22 32 40 44 55 80 88 110 157 160 176 220 314 352 440 499 628 785 880 998 1256 1570 1727 1760 1996 2495 2512 3140 3454 3992 4990 5024 5489 6280 6908 7984 8635 9980 10978 12560 13816 15968 17270 19960 21956 25120 27445 27632 34540 39920 43912 54890 55264 69080 78343 79840 87824 109780 138160 156686 175648 219560 276320 313372 391715 439120 626744 783430 861773 878240 1253488 1566860 1723546 2506976 3133720 3447092 4308865 6267440 6894184 8617730 12534880 13788368 17235460 27576736 34470920 68941840 137883680