172813012 has 6 divisors (see below), whose sum is σ = 302422778. Its totient is φ = 86406504.

The previous prime is 172812979. The next prime is 172813049. The reversal of 172813012 is 210318271.

It is a happy number.

172813012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 167857936 + 4955076 = 12956^2 + 2226^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21601623 + ... + 21601630.

Almost surely, 2^172813012 is an apocalyptic number.

It is an amenable number.

172813012 is a deficient number, since it is larger than the sum of its proper divisors (129609766).

172813012 is a wasteful number, since it uses less digits than its factorization.

172813012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43203257 (or 43203255 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 172813012 is about 13145.8362989960. The cubic root of 172813012 is about 557.0046403201.

The spelling of 172813012 in words is "one hundred seventy-two million, eight hundred thirteen thousand, twelve".