23351649 has 16 divisors (see below), whose sum is σ = 32331264. Its totient is φ = 14976000.

The previous prime is 23351639. The next prime is 23351651. The reversal of 23351649 is 94615332.

It is not a de Polignac number, because 23351649 - 2⁷ = 23351521 is a prime.

It is a super-2 number, since 2×23351649² = 1090599022038402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23351609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17299 + ... + 18599.

It is an arithmetic number, because the mean of its divisors is an integer number (2020704).

Almost surely, 2^23351649 is an apocalyptic number.

It is an amenable number.

23351649 is a deficient number, since it is larger than the sum of its proper divisors (8979615).

23351649 is a wasteful number, since it uses less digits than its factorization.

23351649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528.

The product of its digits is 19440, while the sum is 33.

The square root of 23351649 is about 4832.3543951163. The cubic root of 23351649 is about 285.8287113937.

The spelling of 23351649 in words is "twenty-three million, three hundred fifty-one thousand, six hundred forty-nine".