23774921 has 2 divisors, whose sum is σ = 23774922. Its totient is φ = 23774920.

The previous prime is 23774917. The next prime is 23774929. The reversal of 23774921 is 12947732.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18181696 + 5593225 = 4264^2 + 2365^2 .

It is a cyclic number.

It is not a de Polignac number, because 23774921 - 2² = 23774917 is a prime.

It is not a weakly prime, because it can be changed into another prime (23774929) by changing a digit.

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 as a sum of consecutive naturals, namely, 11887460 + 11887461.

It is an arithmetic number, because the mean of its divisors is an integer number (11887461).

Almost surely, 2^23774921 is an apocalyptic number.

It is an amenable number.

23774921 is a deficient number, since it is larger than the sum of its proper divisors (1).

23774921 is an equidigital number, since it uses as much as digits as its factorization.

23774921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 35.

The square root of 23774921 is about 4875.9533426808. The cubic root of 23774921 is about 287.5453579350.

The spelling of 23774921 in words is "twenty-three million, seven hundred seventy-four thousand, nine hundred twenty-one".