172880408 has 32 divisors (see below), whose sum is σ = 328114800. Its totient is φ = 85390848.

The previous prime is 172880381. The next prime is 172880413. The reversal of 172880408 is 804088271.

It is a happy number.

It is a congruent number.

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, 303548 + ... + 304116.

Almost surely, 2^172880408 is an apocalyptic number.

It is an amenable number.

172880408 is a deficient number, since it is larger than the sum of its proper divisors (155234392).

172880408 is a wasteful number, since it uses less digits than its factorization.

172880408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971 (or 967 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 38.

The square root of 172880408 is about 13148.3994463205. The cubic root of 172880408 is about 557.0770403577.

The spelling of 172880408 in words is "one hundred seventy-two million, eight hundred eighty thousand, four hundred eight".