172884628 has 48 divisors (see below), whose sum is σ = 367766784. Its totient is φ = 69419520.

The previous prime is 172884599. The next prime is 172884637. The reversal of 172884628 is 826488271.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124498 + ... + 125878.

It is an arithmetic number, because the mean of its divisors is an integer number (7661808).

Almost surely, 2^172884628 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 172884628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183883392).

172884628 is an abundant number, since it is smaller than the sum of its proper divisors (194882156).

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

172884628 is a wasteful number, since it uses less digits than its factorization.

172884628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1672 (or 1670 counting only the distinct ones).

The product of its digits is 344064, while the sum is 46.

The square root of 172884628 is about 13148.5599211473. The cubic root of 172884628 is about 557.0815730594.

The spelling of 172884628 in words is "one hundred seventy-two million, eight hundred eighty-four thousand, six hundred twenty-eight".