172828452 has 24 divisors (see below), whose sum is σ = 403832800. Its totient is φ = 57528576.

The previous prime is 172828423. The next prime is 172828471. The reversal of 172828452 is 254828271.

It is a self number, because there is not a number n which added to its sum of digits gives 172828452.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 877 + ... + 18612.

Almost surely, 2^172828452 is an apocalyptic number.

172828452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

172828452 is an abundant number, since it is smaller than the sum of its proper divisors (231004348).

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

172828452 is a wasteful number, since it uses less digits than its factorization.

172828452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20235 (or 20233 counting only the distinct ones).

The product of its digits is 71680, while the sum is 39.

The square root of 172828452 is about 13146.4235440670. The cubic root of 172828452 is about 557.0212283757.

The spelling of 172828452 in words is "one hundred seventy-two million, eight hundred twenty-eight thousand, four hundred fifty-two".