23290388 has 12 divisors (see below), whose sum is σ = 44463552. Its totient is φ = 10586520.

The previous prime is 23290387. The next prime is 23290429. The reversal of 23290388 is 88309232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23290387) 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, 264620 + ... + 264707.

It is an arithmetic number, because the mean of its divisors is an integer number (3705296).

Almost surely, 2^23290388 is an apocalyptic number.

It is an amenable number.

23290388 is a deficient number, since it is larger than the sum of its proper divisors (21173164).

23290388 is a wasteful number, since it uses less digits than its factorization.

23290388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529342 (or 529340 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 23290388 is about 4826.0116037987. The cubic root of 23290388 is about 285.5785436624.

The spelling of 23290388 in words is "twenty-three million, two hundred ninety thousand, three hundred eighty-eight".