172808734 has 8 divisors (see below), whose sum is σ = 296243568. Its totient is φ = 74060880.

The previous prime is 172808681. The next prime is 172808737. The reversal of 172808734 is 437808271.

172808734 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172808737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6171727 + ... + 6171754.

It is an arithmetic number, because the mean of its divisors is an integer number (37030446).

Almost surely, 2^172808734 is an apocalyptic number.

172808734 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

172808734 is a deficient number, since it is larger than the sum of its proper divisors (123434834).

172808734 is a wasteful number, since it uses less digits than its factorization.

172808734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12343490.

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 172808734 is about 13145.6735848719. The cubic root of 172808734 is about 557.0000440506. Note that the first 4 decimals are identical.

The spelling of 172808734 in words is "one hundred seventy-two million, eight hundred eight thousand, seven hundred thirty-four".