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27682985 = 511245757
BaseRepresentation
bin110100110011…
…0100010101001
31221002102220202
41221212202221
524041323420
62425201545
7454205261
oct151464251
957072822
1027682985
1114698700
1293302b5
135973485
1439687a1
15266c575
hex1a668a9

27682985 has 12 divisors (see below), whose sum is σ = 36514884. Its totient is φ = 20132640.

The previous prime is 27682979. The next prime is 27682999. The reversal of 27682985 is 58928672.

It can be written as a sum of positive squares in 2 ways, for example, as 7441984 + 20241001 = 2728^2 + 4499^2 .

It is not a de Polignac number, because 27682985 - 210 = 27681961 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22274 + ... + 23483.

It is an arithmetic number, because the mean of its divisors is an integer number (3042907).

Almost surely, 227682985 is an apocalyptic number.

It is an amenable number.

27682985 is a deficient number, since it is larger than the sum of its proper divisors (8831899).

27682985 is a wasteful number, since it uses less digits than its factorization.

27682985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45784 (or 45773 counting only the distinct ones).

The product of its digits is 483840, while the sum is 47.

The square root of 27682985 is about 5261.4622492231. The cubic root of 27682985 is about 302.5085397038.

The spelling of 27682985 in words is "twenty-seven million, six hundred eighty-two thousand, nine hundred eighty-five".

Divisors: 1 5 11 55 121 605 45757 228785 503327 2516635 5536597 27682985