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57738620 = 2257173557
BaseRepresentation
bin1101110001000…
…0010101111100
311000122102111102
43130100111330
5104240113440
65421312232
71300525112
oct334202574
9130572442
1057738620
112a656975
1217405678
13bc67884
14794dab2
155107b15
hex371057c

57738620 has 48 divisors (see below), whose sum is σ = 124867008. Its totient is φ = 22417920.

The previous prime is 57738617. The next prime is 57738641. The reversal of 57738620 is 2683775.

It is a happy number.

57738620 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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103382 + ... + 103938.

It is an arithmetic number, because the mean of its divisors is an integer number (2601396).

Almost surely, 257738620 is an apocalyptic number.

It is an amenable number.

57738620 is an abundant number, since it is smaller than the sum of its proper divisors (67128388).

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

57738620 is a wasteful number, since it uses less digits than its factorization.

57738620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710 (or 708 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 57738620 is about 7598.5932908664. The cubic root of 57738620 is about 386.5053115242.

The spelling of 57738620 in words is "fifty-seven million, seven hundred thirty-eight thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 71 73 142 146 284 292 355 365 557 710 730 1114 1420 1460 2228 2785 5183 5570 10366 11140 20732 25915 39547 40661 51830 79094 81322 103660 158188 162644 197735 203305 395470 406610 790940 813220 2886931 5773862 11547724 14434655 28869310 57738620