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57030257878 = 2113183622079
BaseRepresentation
bin110101000111010001…
…001010110011010110
312110012112111021102021
4311013101022303112
51413244221223003
642111020203354
74056156123256
oct650721126326
9173175437367
1057030257878
1122206103930
12b07739955a
1354bb40b129
142a902c5966
15173bb892bd
hexd4744acd6

57030257878 has 16 divisors (see below), whose sum is σ = 96332636160. Its totient is φ = 25086623400.

The previous prime is 57030257873. The next prime is 57030257887. The reversal of 57030257878 is 87875203075.

It is a happy number.

57030257878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57030257873) 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, 41810358 + ... + 41811721.

It is an arithmetic number, because the mean of its divisors is an integer number (6020789760).

Almost surely, 257030257878 is an apocalyptic number.

57030257878 is a deficient number, since it is larger than the sum of its proper divisors (39302378282).

57030257878 is a wasteful number, since it uses less digits than its factorization.

57030257878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83622123.

The product of its (nonzero) digits is 3292800, while the sum is 52.

The spelling of 57030257878 in words is "fifty-seven billion, thirty million, two hundred fifty-seven thousand, eight hundred seventy-eight".

Divisors: 1 2 11 22 31 62 341 682 83622079 167244158 919842869 1839685738 2592284449 5184568898 28515128939 57030257878