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56861306770 = 2561401232457
BaseRepresentation
bin110100111101001100…
…101010111110010010
312102202202120200001211
4310331030222332102
51412422443304040
642042143050334
74052035063402
oct647514527622
9172682520054
1056861306770
11221297a8414
12b02a8a09aa
135492405368
142a75aa6802
15172be148ea
hexd3d32af92

56861306770 has 32 divisors (see below), whose sum is σ = 104288097456. Its totient is φ = 22315776000.

The previous prime is 56861306687. The next prime is 56861306771. The reversal of 56861306770 is 7760316865.

It can be written as a sum of positive squares in 8 ways, for example, as 33368694241 + 23492612529 = 182671^2 + 153273^2 .

It is a super-3 number, since 3×568613067703 (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (56861306771) 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, 128382 + ... + 360838.

Almost surely, 256861306770 is an apocalyptic number.

56861306770 is a deficient number, since it is larger than the sum of its proper divisors (47426790686).

56861306770 is a wasteful number, since it uses less digits than its factorization.

56861306770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232926.

The product of its (nonzero) digits is 1270080, while the sum is 49.

The spelling of 56861306770 in words is "fifty-six billion, eight hundred sixty-one million, three hundred six thousand, seven hundred seventy".

Divisors: 1 2 5 10 61 122 305 401 610 802 2005 4010 24461 48922 122305 232457 244610 464914 1162285 2324570 14179877 28359754 70899385 93215257 141798770 186430514 466076285 932152570 5686130677 11372261354 28430653385 56861306770