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57214180 = 22517168277
BaseRepresentation
bin1101101001000…
…0010011100100
310222122210002201
43122100103210
5104121323210
65402144244
71263212122
oct332202344
9128583081
1057214180
112a328951
12171b2084
13bb12c5a
147854912
15505253a
hex36904e4

57214180 has 24 divisors (see below), whose sum is σ = 127218168. Its totient is φ = 21539328.

The previous prime is 57214169. The next prime is 57214193. The reversal of 57214180 is 8141275.

It can be written as a sum of positive squares in 4 ways, for example, as 2483776 + 54730404 = 1576^2 + 7398^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83799 + ... + 84478.

It is an arithmetic number, because the mean of its divisors is an integer number (5300757).

Almost surely, 257214180 is an apocalyptic number.

It is an amenable number.

57214180 is an abundant number, since it is smaller than the sum of its proper divisors (70003988).

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

57214180 is a wasteful number, since it uses less digits than its factorization.

57214180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168303 (or 168301 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 57214180 is about 7564.0055526156. The cubic root of 57214180 is about 385.3315410279.

The spelling of 57214180 in words is "fifty-seven million, two hundred fourteen thousand, one hundred eighty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 168277 336554 673108 841385 1682770 2860709 3365540 5721418 11442836 14303545 28607090 57214180