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188816124980 = 22577318475159
BaseRepresentation
bin1010111111011001010…
…0010110110000110100
3200001100220211222011002
42233312110112300310
511043143411444410
6222424012502432
716433016403250
oct2576624266064
9601326758132
10188816124980
117309286438a
123071617aa18
1314a61294c52
1491d2a29260
154da16b37a5
hex2bf6516c34

188816124980 has 48 divisors (see below), whose sum is σ = 459366378240. Its totient is φ = 63850146048.

The previous prime is 188816124979. The next prime is 188816124983. The reversal of 188816124980 is 89421618881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188816124983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9227360 + ... + 9247799.

It is an arithmetic number, because the mean of its divisors is an integer number (9570132880).

Almost surely, 2188816124980 is an apocalyptic number.

188816124980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

188816124980 is an abundant number, since it is smaller than the sum of its proper divisors (270550253260).

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

188816124980 is a wasteful number, since it uses less digits than its factorization.

188816124980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18475248 (or 18475246 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 56.

The spelling of 188816124980 in words is "one hundred eighty-eight billion, eight hundred sixteen million, one hundred twenty-four thousand, nine hundred eighty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 73 140 146 292 365 511 730 1022 1460 2044 2555 5110 10220 18475159 36950318 73900636 92375795 129326113 184751590 258652226 369503180 517304452 646630565 1293261130 1348686607 2586522260 2697373214 5394746428 6743433035 9440806249 13486866070 18881612498 26973732140 37763224996 47204031245 94408062490 188816124980