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57688319 = 132353967
BaseRepresentation
bin1101110000010…
…0000011111111
311000112212111102
43130010003333
5104232011234
65420243315
71300225343
oct334040377
9130485442
1057688319
112a6220a7
12173a053b
13bc4aa00
147939623
1550e7c7e
hex37040ff

57688319 has 12 divisors (see below), whose sum is σ = 62708976. Its totient is φ = 53044992.

The previous prime is 57688283. The next prime is 57688321. The reversal of 57688319 is 91388675.

It is a happy number.

It is not a de Polignac number, because 57688319 - 220 = 56639743 is a prime.

It is a super-2 number, since 2×576883192 = 6655884298091522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57688369) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59174 + ... + 60140.

It is an arithmetic number, because the mean of its divisors is an integer number (5225748).

Almost surely, 257688319 is an apocalyptic number.

57688319 is a deficient number, since it is larger than the sum of its proper divisors (5020657).

57688319 is a wasteful number, since it uses less digits than its factorization.

57688319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346 (or 1333 counting only the distinct ones).

The product of its digits is 362880, while the sum is 47.

The square root of 57688319 is about 7595.2826807170. The cubic root of 57688319 is about 386.3930397486.

The spelling of 57688319 in words is "fifty-seven million, six hundred eighty-eight thousand, three hundred nineteen".

Divisors: 1 13 169 353 967 4589 12571 59657 163423 341351 4437563 57688319