23872621 has 2 divisors, whose sum is σ = 23872622. Its totient is φ = 23872620.

The previous prime is 23872613. The next prime is 23872669. The reversal of 23872621 is 12627832.

23872621 is nontrivially palindromic in base 2.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19624900 + 4247721 = 4430^2 + 2061^2 .

It is a cyclic number.

It is not a de Polignac number, because 23872621 - 2³ = 23872613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23872601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11936310 + 11936311.

It is an arithmetic number, because the mean of its divisors is an integer number (11936311).

Almost surely, 2^23872621 is an apocalyptic number.

It is an amenable number.

23872621 is a deficient number, since it is larger than the sum of its proper divisors (1).

23872621 is an equidigital number, since it uses as much as digits as its factorization.

23872621 is an evil number, because the sum of its binary digits is even.

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

The square root of 23872621 is about 4885.9616249005. The cubic root of 23872621 is about 287.9386966034.

The spelling of 23872621 in words is "twenty-three million, eight hundred seventy-two thousand, six hundred twenty-one".