23722816 has 28 divisors (see below), whose sum is σ = 50697892. Its totient is φ = 10948608.

The previous prime is 23722807. The next prime is 23722819. The reversal of 23722816 is 61822732.

It can be written as a sum of positive squares in 2 ways, for example, as 14137600 + 9585216 = 3760^2 + 3096^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23722819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13425 + ... + 15088.

It is an arithmetic number, because the mean of its divisors is an integer number (1810639).

Almost surely, 2^23722816 is an apocalyptic number.

23722816 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

23722816 is an abundant number, since it is smaller than the sum of its proper divisors (26975076).

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

23722816 is a wasteful number, since it uses less digits than its factorization.

23722816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28538 (or 28528 counting only the distinct ones).

The product of its digits is 8064, while the sum is 31.

The square root of 23722816 is about 4870.6073543245. The cubic root of 23722816 is about 287.3351432940.

The spelling of 23722816 in words is "twenty-three million, seven hundred twenty-two thousand, eight hundred sixteen".