23445690 has 16 divisors (see below), whose sum is σ = 56269728. Its totient is φ = 6252176.

The previous prime is 23445683. The next prime is 23445713. The reversal of 23445690 is 9654432.

It is a super-2 number, since 2×23445690² = 1099400759152200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390732 + ... + 390791.

It is an arithmetic number, because the mean of its divisors is an integer number (3516858).

Almost surely, 2^23445690 is an apocalyptic number.

23445690 is an abundant number, since it is smaller than the sum of its proper divisors (32824038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23445690 is a wasteful number, since it uses less digits than its factorization.

23445690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781533.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 23445690 is about 4842.0749684407. The cubic root of 23445690 is about 286.2118908351.

The spelling of 23445690 in words is "twenty-three million, four hundred forty-five thousand, six hundred ninety".