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23149682 = 217680873
BaseRepresentation
bin101100001001…
…1110001110010
31121120010101122
41120103301302
521411242212
62144102242
7400524533
oct130236162
947503348
1023149682
1112081776
127904982
134a46c4a
14310868a
152074272
hex1613c72

23149682 has 8 divisors (see below), whose sum is σ = 36767196. Its totient is φ = 10893952.

The previous prime is 23149681. The next prime is 23149691. The reversal of 23149682 is 28694132.

It can be written as a sum of positive squares in 2 ways, for example, as 21893041 + 1256641 = 4679^2 + 1121^2 .

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

It is a super-2 number, since 2×231496822 = 1071815553402248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23149681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340403 + ... + 340470.

Almost surely, 223149682 is an apocalyptic number.

23149682 is a deficient number, since it is larger than the sum of its proper divisors (13617514).

23149682 is a wasteful number, since it uses less digits than its factorization.

23149682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680892.

The product of its digits is 20736, while the sum is 35.

The square root of 23149682 is about 4811.4116431667. The cubic root of 23149682 is about 285.0022858132.

The spelling of 23149682 in words is "twenty-three million, one hundred forty-nine thousand, six hundred eighty-two".

Divisors: 1 2 17 34 680873 1361746 11574841 23149682