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57929285 = 517681521
BaseRepresentation
bin1101110011111…
…0111001000101
311001000010001002
43130332321011
5104312214120
65425343045
71302251021
oct334767105
9131003032
1057929285
112a777147
1217497a85
13c0035ab
14799d381
155144375
hex373ee45

57929285 has 8 divisors (see below), whose sum is σ = 73604376. Its totient is φ = 43617280.

The previous prime is 57929281. The next prime is 57929293. The reversal of 57929285 is 58292975.

It can be written as a sum of positive squares in 4 ways, for example, as 11607649 + 46321636 = 3407^2 + 6806^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57929285 - 22 = 57929281 is a prime.

It is a super-2 number, since 2×579292852 = 6711604121222450, 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 (57929281) 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, 340676 + ... + 340845.

It is an arithmetic number, because the mean of its divisors is an integer number (9200547).

Almost surely, 257929285 is an apocalyptic number.

It is an amenable number.

57929285 is a deficient number, since it is larger than the sum of its proper divisors (15675091).

57929285 is a wasteful number, since it uses less digits than its factorization.

57929285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681543.

The product of its digits is 453600, while the sum is 47.

The square root of 57929285 is about 7611.1290226878. The cubic root of 57929285 is about 386.9302845440.

The spelling of 57929285 in words is "fifty-seven million, nine hundred twenty-nine thousand, two hundred eighty-five".

Divisors: 1 5 17 85 681521 3407605 11585857 57929285