23451216 has 20 divisors (see below), whose sum is σ = 60582432. Its totient is φ = 7817056.

The previous prime is 23451209. The next prime is 23451223. The reversal of 23451216 is 61215432.

It is an interprime number because it is at equal distance from previous prime (23451209) and next prime (23451223).

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

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, 244236 + ... + 244331.

Almost surely, 2^23451216 is an apocalyptic number.

It is an amenable number.

23451216 is an abundant number, since it is smaller than the sum of its proper divisors (37131216).

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

23451216 is a wasteful number, since it uses less digits than its factorization.

23451216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488578 (or 488572 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 23451216 is about 4842.6455579569. The cubic root of 23451216 is about 286.2343751761.

Adding to 23451216 its reverse (61215432), we get a palindrome (84666648).

The spelling of 23451216 in words is "twenty-three million, four hundred fifty-one thousand, two hundred sixteen".