24720172 has 12 divisors (see below), whose sum is σ = 43374240. Its totient is φ = 12327536.

The previous prime is 24720161. The next prime is 24720191. The reversal of 24720172 is 27102742.

It is a super-2 number, since 2×24720172² = 1222173807419168, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 6388 + ... + 9499.

It is an arithmetic number, because the mean of its divisors is an integer number (3614520).

Almost surely, 2^24720172 is an apocalyptic number.

It is an amenable number.

24720172 is a deficient number, since it is larger than the sum of its proper divisors (18654068).

24720172 is a wasteful number, since it uses less digits than its factorization.

24720172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16280 (or 16278 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 24720172 is about 4971.9384549690. The cubic root of 24720172 is about 291.3067151796.

The spelling of 24720172 in words is "twenty-four million, seven hundred twenty thousand, one hundred seventy-two".