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23136079 = 47492257
BaseRepresentation
bin101100001000…
…0011101001111
31121112102201211
41120100131033
521410323304
62143515251
7400440061
oct130203517
947472654
1023136079
111207252a
1278b8b27
134a409b5
143103731
152070204
hex161074f

23136079 has 4 divisors (see below), whose sum is σ = 23628384. Its totient is φ = 22643776.

The previous prime is 23136059. The next prime is 23136089. The reversal of 23136079 is 97063132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23136079 - 211 = 23134031 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23136079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23136049) 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, 246082 + ... + 246175.

It is an arithmetic number, because the mean of its divisors is an integer number (5907096).

Almost surely, 223136079 is an apocalyptic number.

23136079 is a deficient number, since it is larger than the sum of its proper divisors (492305).

23136079 is an equidigital number, since it uses as much as digits as its factorization.

23136079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492304.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 23136079 is about 4809.9978170473. The cubic root of 23136079 is about 284.9464514147.

The spelling of 23136079 in words is "twenty-three million, one hundred thirty-six thousand, seventy-nine".

Divisors: 1 47 492257 23136079