23320447 has 12 divisors (see below), whose sum is σ = 25221456. Its totient is φ = 21483840.

The previous prime is 23320439. The next prime is 23320469. The reversal of 23320447 is 74402332.

It is not a de Polignac number, because 23320447 - 2³ = 23320439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23320547) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 167704 + ... + 167842.

It is an arithmetic number, because the mean of its divisors is an integer number (2101788).

Almost surely, 2^23320447 is an apocalyptic number.

23320447 is a deficient number, since it is larger than the sum of its proper divisors (1901009).

23320447 is an equidigital number, since it uses as much as digits as its factorization.

23320447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366 (or 227 counting only the distinct ones).

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

The square root of 23320447 is about 4829.1248689592. The cubic root of 23320447 is about 285.7013484737.

Adding to 23320447 its reverse (74402332), we get a palindrome (97722779).

The spelling of 23320447 in words is "twenty-three million, three hundred twenty thousand, four hundred forty-seven".