172434404 has 24 divisors (see below), whose sum is σ = 315349440. Its totient is φ = 82345824.

The previous prime is 172434331. The next prime is 172434413. The reversal of 172434404 is 404434271.

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 7 ways as a sum of consecutive naturals, for example, 102482 + ... + 104150.

It is an arithmetic number, because the mean of its divisors is an integer number (13139560).

Almost surely, 2^172434404 is an apocalyptic number.

It is an amenable number.

172434404 is a deficient number, since it is larger than the sum of its proper divisors (142915036).

172434404 is a wasteful number, since it uses less digits than its factorization.

172434404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2819 (or 2817 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 29.

The square root of 172434404 is about 13131.4281020763. The cubic root of 172434404 is about 556.5975710352.

Adding to 172434404 its reverse (404434271), we get a palindrome (576868675).

The spelling of 172434404 in words is "one hundred seventy-two million, four hundred thirty-four thousand, four hundred four".