172873408 has 56 divisors (see below), whose sum is σ = 375818400. Its totient is φ = 78532608.

The previous prime is 172873403. The next prime is 172873411. The reversal of 172873408 is 804378271.

It is not an unprimeable number, because it can be changed into a prime (172873403) 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 7 ways as a sum of consecutive naturals, for example, 28813 + ... + 34291.

Almost surely, 2^172873408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172873408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187909200).

172873408 is an abundant number, since it is smaller than the sum of its proper divisors (202944992).

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

172873408 is a wasteful number, since it uses less digits than its factorization.

172873408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5537 (or 5527 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 172873408 is about 13148.1332515304. The cubic root of 172873408 is about 557.0695214954.

The spelling of 172873408 in words is "one hundred seventy-two million, eight hundred seventy-three thousand, four hundred eight".