23215416 has 96 divisors (see below), whose sum is σ = 71136000. Its totient is φ = 6277824.

The previous prime is 23215403. The next prime is 23215459. The reversal of 23215416 is 61451232.

It is a super-3 number, since 3×23215416³ (a number of 23 digits) contains 333 as substring.

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 23 ways as a sum of consecutive naturals, for example, 21825 + ... + 22863.

It is an arithmetic number, because the mean of its divisors is an integer number (741000).

Almost surely, 2^23215416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23215416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35568000).

23215416 is an abundant number, since it is smaller than the sum of its proper divisors (47920584).

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

23215416 is a wasteful number, since it uses less digits than its factorization.

23215416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081 (or 1070 counting only the distinct ones).

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

The square root of 23215416 is about 4818.2378521613. The cubic root of 23215416 is about 285.2717875137.

Adding to 23215416 its reverse (61451232), we get a palindrome (84666648).

The spelling of 23215416 in words is "twenty-three million, two hundred fifteen thousand, four hundred sixteen".