23290530 has 32 divisors (see below), whose sum is σ = 56346624. Its totient is φ = 6160896.

The previous prime is 23290529. The next prime is 23290571. The reversal of 23290530 is 3509232.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23290530.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 754 + ... + 6866.

It is an arithmetic number, because the mean of its divisors is an integer number (1760832).

Almost surely, 2^23290530 is an apocalyptic number.

23290530 is an abundant number, since it is smaller than the sum of its proper divisors (33056094).

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

23290530 is a wasteful number, since it uses less digits than its factorization.

23290530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6250.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 23290530 is about 4826.0263157177. The cubic root of 23290530 is about 285.5791240459.

Adding to 23290530 its reverse (3509232), we get a palindrome (26799762).

The spelling of 23290530 in words is "twenty-three million, two hundred ninety thousand, five hundred thirty".