172974648 has 64 divisors (see below), whose sum is σ = 539147520. Its totient is φ = 44928000.

The previous prime is 172974629. The next prime is 172974649. The reversal of 172974648 is 846479271.

It is a junction number, because it is equal to n+sod(n) for n = 172974597 and 172974606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172974649) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 44953 + ... + 48648.

It is an arithmetic number, because the mean of its divisors is an integer number (8424180).

Almost surely, 2^172974648 is an apocalyptic number.

It is an amenable number.

172974648 is an abundant number, since it is smaller than the sum of its proper divisors (366172872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172974648 is a wasteful number, since it uses less digits than its factorization.

172974648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93628 (or 93624 counting only the distinct ones).

The product of its digits is 677376, while the sum is 48.

The square root of 172974648 is about 13151.9826642222. The cubic root of 172974648 is about 557.1782459723.

It can be divided in two parts, 17297 and 4648, that added together give a triangular number (21945 = T₂₀₉).

The spelling of 172974648 in words is "one hundred seventy-two million, nine hundred seventy-four thousand, six hundred forty-eight".