23428997 has 2 divisors, whose sum is σ = 23428998. Its totient is φ = 23428996.

The previous prime is 23428981. The next prime is 23429027. The reversal of 23428997 is 79982432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11930116 + 11498881 = 3454^2 + 3391^2 .

It is a cyclic number.

It is not a de Polignac number, because 23428997 - 2⁴ = 23428981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23428967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11714498 + 11714499.

It is an arithmetic number, because the mean of its divisors is an integer number (11714499).

Almost surely, 2^23428997 is an apocalyptic number.

It is an amenable number.

23428997 is a deficient number, since it is larger than the sum of its proper divisors (1).

23428997 is an equidigital number, since it uses as much as digits as its factorization.

23428997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 44.

The square root of 23428997 is about 4840.3509170307. The cubic root of 23428997 is about 286.1439484338.

The spelling of 23428997 in words is "twenty-three million, four hundred twenty-eight thousand, nine hundred ninety-seven".