172643332 has 24 divisors (see below), whose sum is σ = 311172120. Its totient is φ = 83750400.

The previous prime is 172643327. The next prime is 172643353. The reversal of 172643332 is 233346271.

It can be written as a sum of positive squares in 4 ways, for example, as 146264836 + 26378496 = 12094^2 + 5136^2 .

It is a junction number, because it is equal to n+sod(n) for n = 172643294 and 172643303.

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, 57894 + ... + 60802.

It is an arithmetic number, because the mean of its divisors is an integer number (12965505).

Almost surely, 2^172643332 is an apocalyptic number.

It is an amenable number.

172643332 is a deficient number, since it is larger than the sum of its proper divisors (138528788).

172643332 is a wasteful number, since it uses less digits than its factorization.

172643332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3351 (or 3349 counting only the distinct ones).

The product of its digits is 18144, while the sum is 31.

The square root of 172643332 is about 13139.3809595430. The cubic root of 172643332 is about 556.8222784787.

The spelling of 172643332 in words is "one hundred seventy-two million, six hundred forty-three thousand, three hundred thirty-two".