172672734 has 32 divisors (see below), whose sum is σ = 373070880. Its totient is φ = 52964352.

The previous prime is 172672693. The next prime is 172672769. The reversal of 172672734 is 437276271.

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

It is a junction number, because it is equal to n+sod(n) for n = 172672692 and 172672701.

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, 23002 + ... + 29570.

It is an arithmetic number, because the mean of its divisors is an integer number (11658465).

Almost surely, 2^172672734 is an apocalyptic number.

172672734 is an abundant number, since it is smaller than the sum of its proper divisors (200398146).

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

172672734 is a wasteful number, since it uses less digits than its factorization.

172672734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6924.

The product of its digits is 98784, while the sum is 39.

The square root of 172672734 is about 13140.4997621856. The cubic root of 172672734 is about 556.8538865328.

The spelling of 172672734 in words is "one hundred seventy-two million, six hundred seventy-two thousand, seven hundred thirty-four".