172730766 has 32 divisors (see below), whose sum is σ = 373080960. Its totient is φ = 52998624.

The previous prime is 172730743. The next prime is 172730771. The reversal of 172730766 is 667037271.

172730766 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26641 + ... + 32483.

It is an arithmetic number, because the mean of its divisors is an integer number (11658780).

Almost surely, 2^172730766 is an apocalyptic number.

172730766 is an abundant number, since it is smaller than the sum of its proper divisors (200350194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172730766 is a wasteful number, since it uses less digits than its factorization.

172730766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6240.

The product of its (nonzero) digits is 74088, while the sum is 39.

The square root of 172730766 is about 13142.7077118834. The cubic root of 172730766 is about 556.9162621889.

The spelling of 172730766 in words is "one hundred seventy-two million, seven hundred thirty thousand, seven hundred sixty-six".