172248404 has 12 divisors (see below), whose sum is σ = 301544628. Its totient is φ = 86092800.

The previous prime is 172248389. The next prime is 172248409. The reversal of 172248404 is 404842271.

It can be written as a sum of positive squares in 2 ways, for example, as 55651600 + 116596804 = 7460^2 + 10798^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172248409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8084 + ... + 20244.

It is an arithmetic number, because the mean of its divisors is an integer number (25128719).

Almost surely, 2^172248404 is an apocalyptic number.

It is an amenable number.

172248404 is a deficient number, since it is larger than the sum of its proper divisors (129296224).

172248404 is a wasteful number, since it uses less digits than its factorization.

172248404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15706 (or 15704 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 32.

The square root of 172248404 is about 13124.3439455083. The cubic root of 172248404 is about 556.3973704719.

The spelling of 172248404 in words is "one hundred seventy-two million, two hundred forty-eight thousand, four hundred four".