23422920 has 64 divisors (see below), whose sum is σ = 71781120. Its totient is φ = 6111744.

The previous prime is 23422913. The next prime is 23422933. The reversal of 23422920 is 2922432.

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

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3564 + ... + 7716.

It is an arithmetic number, because the mean of its divisors is an integer number (1121580).

Almost surely, 2^23422920 is an apocalyptic number.

23422920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23422920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35890560).

23422920 is an abundant number, since it is smaller than the sum of its proper divisors (48358200).

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

23422920 is a wasteful number, since it uses less digits than its factorization.

23422920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4214 (or 4210 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 23422920 is about 4839.7231325769. The cubic root of 23422920 is about 286.1192063426.

It can be divided in two parts, 23422 and 920, that added together give a palindrome (24342).

The spelling of 23422920 in words is "twenty-three million, four hundred twenty-two thousand, nine hundred twenty".