172847132 has 12 divisors (see below), whose sum is σ = 302785896. Its totient is φ = 86336880.

The previous prime is 172847117. The next prime is 172847179. The reversal of 172847132 is 231748271.

It is a super-2 number, since 2×172847132² = 59752262081250848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 172847092 and 172847101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17078 + ... + 25245.

It is an arithmetic number, because the mean of its divisors is an integer number (25232158).

Almost surely, 2^172847132 is an apocalyptic number.

It is an amenable number.

172847132 is a deficient number, since it is larger than the sum of its proper divisors (129938764).

172847132 is a wasteful number, since it uses less digits than its factorization.

172847132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43348 (or 43346 counting only the distinct ones).

The product of its digits is 18816, while the sum is 35.

The square root of 172847132 is about 13147.1339842568. The cubic root of 172847132 is about 557.0412960238.

The spelling of 172847132 in words is "one hundred seventy-two million, eight hundred forty-seven thousand, one hundred thirty-two".