672800172 has 72 divisors (see below), whose sum is σ = 1730632176. Its totient is φ = 203280000.

The previous prime is 672800147. The next prime is 672800207. The reversal of 672800172 is 271008276.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 959422 + ... + 960122.

It is an arithmetic number, because the mean of its divisors is an integer number (24036558).

Almost surely, 2^672800172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672800172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (865316088).

672800172 is an abundant number, since it is smaller than the sum of its proper divisors (1057832004).

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

672800172 is a wasteful number, since it uses less digits than its factorization.

672800172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391 (or 1378 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 672800172 is about 25938.3918545464. The cubic root of 672800172 is about 876.2513456946.

The spelling of 672800172 in words is "six hundred seventy-two million, eight hundred thousand, one hundred seventy-two".