172016672 has 12 divisors (see below), whose sum is σ = 338657886. Its totient is φ = 86008320.

The previous prime is 172016653. The next prime is 172016681. The reversal of 172016672 is 276610271.

It can be written as a sum of positive squares in only one way, i.e., 144096016 + 27920656 = 12004^2 + 5284^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 5375521 = 172016672 / (1 + 7 + 2 + 0 + 1 + 6 + 6 + 7 + 2).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2687729 + ... + 2687792.

Almost surely, 2^172016672 is an apocalyptic number.

It is an amenable number.

172016672 is a deficient number, since it is larger than the sum of its proper divisors (166641214).

172016672 is an equidigital number, since it uses as much as digits as its factorization.

172016672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5375531 (or 5375523 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 172016672 is about 13115.5126472433. The cubic root of 172016672 is about 556.1477446678.

The spelling of 172016672 in words is "one hundred seventy-two million, sixteen thousand, six hundred seventy-two".