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87994168 = 23194313463
BaseRepresentation
bin1010011111010…
…10111100111000
320010120120022021
411033222330320
5140011303133
612422004224
72115636523
oct517527470
9203516267
1087994168
1145741359
1225576674
13152cbc72
14b987bba
157ad252d
hex53eaf38

87994168 has 32 divisors (see below), whose sum is σ = 177724800. Its totient is φ = 40709088.

The previous prime is 87994157. The next prime is 87994169. The reversal of 87994168 is 86149978.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87994169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196 + ... + 13267.

It is an arithmetic number, because the mean of its divisors is an integer number (5553900).

Almost surely, 287994168 is an apocalyptic number.

It is an amenable number.

87994168 is an abundant number, since it is smaller than the sum of its proper divisors (89730632).

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

87994168 is a wasteful number, since it uses less digits than its factorization.

87994168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13531 (or 13527 counting only the distinct ones).

The product of its digits is 870912, while the sum is 52.

The square root of 87994168 is about 9380.5206678521. The cubic root of 87994168 is about 444.7861919484.

The spelling of 87994168 in words is "eighty-seven million, nine hundred ninety-four thousand, one hundred sixty-eight".

Divisors: 1 2 4 8 19 38 43 76 86 152 172 344 817 1634 3268 6536 13463 26926 53852 107704 255797 511594 578909 1023188 1157818 2046376 2315636 4631272 10999271 21998542 43997084 87994168