23149085 has 4 divisors (see below), whose sum is σ = 27778908. Its totient is φ = 18519264.

The previous prime is 23149081. The next prime is 23149111. The reversal of 23149085 is 58094132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8602489 + 14546596 = 2933^2 + 3814^2 .

It is a cyclic number.

It is not a de Polignac number, because 23149085 - 2² = 23149081 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23149081) 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, 2314904 + ... + 2314913.

It is an arithmetic number, because the mean of its divisors is an integer number (6944727).

Almost surely, 2^23149085 is an apocalyptic number.

It is an amenable number.

23149085 is a deficient number, since it is larger than the sum of its proper divisors (4629823).

23149085 is an equidigital number, since it uses as much as digits as its factorization.

23149085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4629822.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 23149085 is about 4811.3496027622. The cubic root of 23149085 is about 284.9998358468. Note that the first 3 decimals are identical.

The spelling of 23149085 in words is "twenty-three million, one hundred forty-nine thousand, eighty-five".