23290464 has 96 divisors (see below), whose sum is σ = 64350720. Its totient is φ = 7368192.

The previous prime is 23290457. The next prime is 23290469. The reversal of 23290464 is 46409232.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23290469) 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, 280567 + ... + 280649.

It is an arithmetic number, because the mean of its divisors is an integer number (670320).

Almost surely, 2^23290464 is an apocalyptic number.

23290464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23290464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32175360).

23290464 is an abundant number, since it is smaller than the sum of its proper divisors (41060256).

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

23290464 is a wasteful number, since it uses less digits than its factorization.

23290464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 23290464 is about 4826.0194777891. The cubic root of 23290464 is about 285.5788542905.

Adding to 23290464 its reverse (46409232), we get a palindrome (69699696).

The spelling of 23290464 in words is "twenty-three million, two hundred ninety thousand, four hundred sixty-four".