23516416 has 72 divisors (see below), whose sum is σ = 58572864. Its totient is φ = 9154560.

The previous prime is 23516413. The next prime is 23516417. The reversal of 23516416 is 61461532.

It is a super-3 number, since 3×23516416³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23516413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19116 + ... + 20308.

It is an arithmetic number, because the mean of its divisors is an integer number (813512).

Almost surely, 2^23516416 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 23516416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29286432).

23516416 is an abundant number, since it is smaller than the sum of its proper divisors (35056448).

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

23516416 is a wasteful number, since it uses less digits than its factorization.

23516416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227 (or 1213 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 23516416 is about 4849.3727429432. The cubic root of 23516416 is about 286.4993964375.

Adding to 23516416 its reverse (61461532), we get a palindrome (84977948).

Subtracting 23516416 from its reverse (61461532), we obtain a triangular number (37945116 = T₈₇₁₁).

It can be divided in two parts, 23516 and 416, that added together give a palindrome (23932).

The spelling of 23516416 in words is "twenty-three million, five hundred sixteen thousand, four hundred sixteen".