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87054293680 = 2451088178671
BaseRepresentation
bin101000100010011010…
…1110001101010110000
322022200222000022201021
41101010311301222300
52411241344344210
6103554151345224
76201200200324
oct1210465615260
9268628008637
1087054293680
1133a12974362
1214a56382214
13829476a5a3
1442db9c9984
1523e795ebda
hex1444d71ab0

87054293680 has 20 divisors (see below), whose sum is σ = 202401232992. Its totient is φ = 34821717440.

The previous prime is 87054293629. The next prime is 87054293699. The reversal of 87054293680 is 8639245078.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 544089256 + ... + 544089415.

Almost surely, 287054293680 is an apocalyptic number.

87054293680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

87054293680 is an abundant number, since it is smaller than the sum of its proper divisors (115346939312).

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

87054293680 is a wasteful number, since it uses less digits than its factorization.

87054293680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088178684 (or 1088178678 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 87054293680 in words is "eighty-seven billion, fifty-four million, two hundred ninety-three thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 1088178671 2176357342 4352714684 5440893355 8705429368 10881786710 17410858736 21763573420 43527146840 87054293680