23472505 has 32 divisors (see below), whose sum is σ = 34652160. Its totient is φ = 14904000.

The previous prime is 23472499. The next prime is 23472551. The reversal of 23472505 is 50527432.

It is not a de Polignac number, because 23472505 - 2⁹ = 23471993 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 30880 + ... + 31630.

It is an arithmetic number, because the mean of its divisors is an integer number (1082880).

Almost surely, 2^23472505 is an apocalyptic number.

It is an amenable number.

23472505 is a deficient number, since it is larger than the sum of its proper divisors (11179655).

23472505 is a wasteful number, since it uses less digits than its factorization.

23472505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829.

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 23472505 is about 4844.8431347155. The cubic root of 23472505 is about 286.3209634452.

Adding to 23472505 its reverse (50527432), we get a palindrome (73999937).

The spelling of 23472505 in words is "twenty-three million, four hundred seventy-two thousand, five hundred five".