23420473 has 2 divisors, whose sum is σ = 23420474. Its totient is φ = 23420472.

The previous prime is 23420459. The next prime is 23420479. The reversal of 23420473 is 37402432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23309584 + 110889 = 4828^2 + 333^2 .

It is a cyclic number.

It is not a de Polignac number, because 23420473 - 2⁹ = 23419961 is a prime.

It is not a weakly prime, because it can be changed into another prime (23420479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11710236 + 11710237.

It is an arithmetic number, because the mean of its divisors is an integer number (11710237).

Almost surely, 2^23420473 is an apocalyptic number.

It is an amenable number.

23420473 is a deficient number, since it is larger than the sum of its proper divisors (1).

23420473 is an equidigital number, since it uses as much as digits as its factorization.

23420473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 25.

The square root of 23420473 is about 4839.4703222564. The cubic root of 23420473 is about 286.1092423404.

The spelling of 23420473 in words is "twenty-three million, four hundred twenty thousand, four hundred seventy-three".