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57752890 = 2513444253
BaseRepresentation
bin1101110001001…
…1110100111010
311000200011001221
43130103310322
5104241043030
65421502254
71300614526
oct334236472
9130604057
1057752890
112a666668
121741198a
13bc71210
147954d86
15510be7a
hex3713d3a

57752890 has 16 divisors (see below), whose sum is σ = 111952008. Its totient is φ = 21324096.

The previous prime is 57752879. The next prime is 57752923. The reversal of 57752890 is 9825775.

It can be written as a sum of positive squares in 4 ways, for example, as 17214201 + 40538689 = 4149^2 + 6367^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221997 + ... + 222256.

Almost surely, 257752890 is an apocalyptic number.

57752890 is a deficient number, since it is larger than the sum of its proper divisors (54199118).

57752890 is a wasteful number, since it uses less digits than its factorization.

57752890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444273.

The product of its (nonzero) digits is 176400, while the sum is 43.

The square root of 57752890 is about 7599.5322224463. The cubic root of 57752890 is about 386.5371502743.

The spelling of 57752890 in words is "fifty-seven million, seven hundred fifty-two thousand, eight hundred ninety".

Divisors: 1 2 5 10 13 26 65 130 444253 888506 2221265 4442530 5775289 11550578 28876445 57752890