23738621 has 2 divisors, whose sum is σ = 23738622. Its totient is φ = 23738620.

The previous prime is 23738609. The next prime is 23738629. The reversal of 23738621 is 12683732.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23145721 + 592900 = 4811^2 + 770^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23738621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23738629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11869310 + 11869311.

It is an arithmetic number, because the mean of its divisors is an integer number (11869311).

Almost surely, 2^23738621 is an apocalyptic number.

It is an amenable number.

23738621 is a deficient number, since it is larger than the sum of its proper divisors (1).

23738621 is an equidigital number, since it uses as much as digits as its factorization.

23738621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 32.

The square root of 23738621 is about 4872.2295717669. The cubic root of 23738621 is about 287.3989401577.

The spelling of 23738621 in words is "twenty-three million, seven hundred thirty-eight thousand, six hundred twenty-one".