23421264 has 20 divisors (see below), whose sum is σ = 60505056. Its totient is φ = 7807072.

The previous prime is 23421253. The next prime is 23421269. The reversal of 23421264 is 46212432.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23421269) 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, 243924 + ... + 244019.

Almost surely, 2^23421264 is an apocalyptic number.

23421264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

23421264 is an abundant number, since it is smaller than the sum of its proper divisors (37083792).

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

23421264 is a wasteful number, since it uses less digits than its factorization.

23421264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487954 (or 487948 counting only the distinct ones).

The product of its digits is 2304, while the sum is 24.

The square root of 23421264 is about 4839.5520453860. The cubic root of 23421264 is about 286.1124633095.

Adding to 23421264 its reverse (46212432), we get a palindrome (69633696).

The spelling of 23421264 in words is "twenty-three million, four hundred twenty-one thousand, two hundred sixty-four".