23072816 has 20 divisors (see below), whose sum is σ = 48142752. Its totient is φ = 10648896.

The previous prime is 23072809. The next prime is 23072827. The reversal of 23072816 is 61827032.

It is a happy 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, 55256 + ... + 55671.

Almost surely, 2^23072816 is an apocalyptic number.

23072816 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

23072816 is an abundant number, since it is smaller than the sum of its proper divisors (25069936).

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

23072816 is a wasteful number, since it uses less digits than its factorization.

23072816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110948 (or 110942 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 23072816 is about 4803.4171170116. The cubic root of 23072816 is about 284.6864963477.

Adding to 23072816 its reverse (61827032), we get a palindrome (84899848).

The spelling of 23072816 in words is "twenty-three million, seventy-two thousand, eight hundred sixteen".