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57788994 = 23194491129
BaseRepresentation
bin1101110001110…
…0101001000010
311000201222121010
43130130221002
5104243221434
65422341350
71301125014
oct334345102
9130658533
1057788994
112a6907aa
121742a856
13bc84793
1479641b4
1551179e9
hex371ca42

57788994 has 32 divisors (see below), whose sum is σ = 122040000. Its totient is φ = 18192384.

The previous prime is 57788993. The next prime is 57789007. The reversal of 57788994 is 49988775.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (57788993) 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, 50622 + ... + 51750.

It is an arithmetic number, because the mean of its divisors is an integer number (3813750).

Almost surely, 257788994 is an apocalyptic number.

57788994 is an abundant number, since it is smaller than the sum of its proper divisors (64251006).

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

57788994 is a wasteful number, since it uses less digits than its factorization.

57788994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1602.

The product of its digits is 5080320, while the sum is 57.

The square root of 57788994 is about 7601.9072606814. The cubic root of 57788994 is about 386.6176809063.

The spelling of 57788994 in words is "fifty-seven million, seven hundred eighty-eight thousand, nine hundred ninety-four".

Divisors: 1 2 3 6 19 38 57 114 449 898 1129 1347 2258 2694 3387 6774 8531 17062 21451 25593 42902 51186 64353 128706 506921 1013842 1520763 3041526 9631499 19262998 28894497 57788994