23691264 has 64 divisors (see below), whose sum is σ = 63437880. Its totient is φ = 7864320.

The previous prime is 23691257. The next prime is 23691281. The reversal of 23691264 is 46219632.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×23691264² = 1122551979835392, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98184 + ... + 98424.

Almost surely, 2^23691264 is an apocalyptic number.

23691264 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 23691264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31718940).

23691264 is an abundant number, since it is smaller than the sum of its proper divisors (39746616).

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

23691264 is an frugal number, since it uses more digits than its factorization.

23691264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274 (or 246 counting only the distinct ones).

The product of its digits is 15552, while the sum is 33.

The square root of 23691264 is about 4867.3672555089. The cubic root of 23691264 is about 287.2076988855.

The spelling of 23691264 in words is "twenty-three million, six hundred ninety-one thousand, two hundred sixty-four".