23922780 has 144 divisors (see below), whose sum is σ = 79672320. Its totient is φ = 5346432.

The previous prime is 23922763. The next prime is 23922799. The reversal of 23922780 is 8722932.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 232209 + ... + 232311.

It is an arithmetic number, because the mean of its divisors is an integer number (553280).

Almost surely, 2^23922780 is an apocalyptic number.

23922780 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 23922780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39836160).

23922780 is an abundant number, since it is smaller than the sum of its proper divisors (55749540).

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

23922780 is a wasteful number, since it uses less digits than its factorization.

23922780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 23922780 is about 4891.0919026328. The cubic root of 23922780 is about 288.1402191430.

The spelling of 23922780 in words is "twenty-three million, nine hundred twenty-two thousand, seven hundred eighty".