23945620 has 12 divisors (see below), whose sum is σ = 50285844. Its totient is φ = 9578240.

The previous prime is 23945617. The next prime is 23945633. The reversal of 23945620 is 2654932.

It can be written as a sum of positive squares in 2 ways, for example, as 3857296 + 20088324 = 1964^2 + 4482^2 .

It is a congruent 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, 598621 + ... + 598660.

It is an arithmetic number, because the mean of its divisors is an integer number (4190487).

Almost surely, 2^23945620 is an apocalyptic number.

23945620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23945620 is an abundant number, since it is smaller than the sum of its proper divisors (26340224).

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

23945620 is a wasteful number, since it uses less digits than its factorization.

23945620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197290 (or 1197288 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 23945620 is about 4893.4262025701. The cubic root of 23945620 is about 288.2318894993.

The spelling of 23945620 in words is "twenty-three million, nine hundred forty-five thousand, six hundred twenty".