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57987244290 = 23517113700479
BaseRepresentation
bin110110000000010011…
…110010000100000010
312112200020020012222110
4312000103302010002
51422224213304130
642350003520150
74121656305153
oct660023620402
9175606205873
1057987244290
1122657318998
12b2a3989056
135611767b91
142b4143792a
151795bc0ab0
hexd804f2102

57987244290 has 32 divisors (see below), whose sum is σ = 147355822080. Its totient is φ = 14553661184.

The previous prime is 57987244261. The next prime is 57987244327. The reversal of 57987244290 is 9244278975.

It is a self number, because there is not a number n which added to its sum of digits gives 57987244290.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56849730 + ... + 56850749.

It is an arithmetic number, because the mean of its divisors is an integer number (4604869440).

Almost surely, 257987244290 is an apocalyptic number.

57987244290 is an abundant number, since it is smaller than the sum of its proper divisors (89368577790).

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

57987244290 is a wasteful number, since it uses less digits than its factorization.

57987244290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113700506.

The product of its (nonzero) digits is 10160640, while the sum is 57.

The spelling of 57987244290 in words is "fifty-seven billion, nine hundred eighty-seven million, two hundred forty-four thousand, two hundred ninety".

Divisors: 1 2 3 5 6 10 15 17 30 34 51 85 102 170 255 510 113700479 227400958 341101437 568502395 682202874 1137004790 1705507185 1932908143 3411014370 3865816286 5798724429 9664540715 11597448858 19329081430 28993622145 57987244290