23289290 has 16 divisors (see below), whose sum is σ = 42018912. Its totient is φ = 9293904.

The previous prime is 23289241. The next prime is 23289293. The reversal of 23289290 is 9298232.

It is a self number, because there is not a number n which added to its sum of digits gives 23289290.

It is not an unprimeable number, because it can be changed into a prime (23289293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2177 + ... + 7163.

It is an arithmetic number, because the mean of its divisors is an integer number (2626182).

Almost surely, 2^23289290 is an apocalyptic number.

23289290 is a deficient number, since it is larger than the sum of its proper divisors (18729622).

23289290 is a wasteful number, since it uses less digits than its factorization.

23289290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5461.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 23289290 is about 4825.8978439250. The cubic root of 23289290 is about 285.5740558286.

The spelling of 23289290 in words is "twenty-three million, two hundred eighty-nine thousand, two hundred ninety".