172016902 has 4 divisors (see below), whose sum is σ = 258025356. Its totient is φ = 86008450.

The previous prime is 172016869. The next prime is 172016903. The reversal of 172016902 is 209610271.

It is a happy number.

172016902 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172016903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43004224 + ... + 43004227.

It is an arithmetic number, because the mean of its divisors is an integer number (64506339).

Almost surely, 2^172016902 is an apocalyptic number.

172016902 is a deficient number, since it is larger than the sum of its proper divisors (86008454).

172016902 is an equidigital number, since it uses as much as digits as its factorization.

172016902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86008453.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 172016902 is about 13115.5214154833. The cubic root of 172016902 is about 556.1479925390.

The spelling of 172016902 in words is "one hundred seventy-two million, sixteen thousand, nine hundred two".