23242447 has 2 divisors, whose sum is σ = 23242448. Its totient is φ = 23242446.

The previous prime is 23242421. The next prime is 23242459. The reversal of 23242447 is 74424232.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23242447 is a prime.

It is a super-2 number, since 2×23242447² = 1080422685095618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23242547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11621223 + 11621224.

It is an arithmetic number, because the mean of its divisors is an integer number (11621224).

Almost surely, 2^23242447 is an apocalyptic number.

23242447 is a deficient number, since it is larger than the sum of its proper divisors (1).

23242447 is an equidigital number, since it uses as much as digits as its factorization.

23242447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 28.

The square root of 23242447 is about 4821.0421072627. The cubic root of 23242447 is about 285.3824638386.

Adding to 23242447 its reverse (74424232), we get a palindrome (97666679).

The spelling of 23242447 in words is "twenty-three million, two hundred forty-two thousand, four hundred forty-seven".