172730882 has 4 divisors (see below), whose sum is σ = 259096326. Its totient is φ = 86365440.

The previous prime is 172730879. The next prime is 172730923. The reversal of 172730882 is 288037271.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 166435801 + 6295081 = 12901^2 + 2509^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43182719 + ... + 43182722.

Almost surely, 2^172730882 is an apocalyptic number.

172730882 is a deficient number, since it is larger than the sum of its proper divisors (86365444).

172730882 is an equidigital number, since it uses as much as digits as its factorization.

172730882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86365443.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 172730882 is about 13142.7121249763. The cubic root of 172730882 is about 556.9163868574.

The spelling of 172730882 in words is "one hundred seventy-two million, seven hundred thirty thousand, eight hundred eighty-two".