840033172 has 48 divisors (see below), whose sum is σ = 1701604800. Its totient is φ = 358617600.

The previous prime is 840033167. The next prime is 840033211. The reversal of 840033172 is 271330048.

It is a self number, because there is not a number n which added to its sum of digits gives 840033172.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 493579 + ... + 495277.

It is an arithmetic number, because the mean of its divisors is an integer number (35450100).

Almost surely, 2^840033172 is an apocalyptic number.

It is an amenable number.

840033172 is an abundant number, since it is smaller than the sum of its proper divisors (861571628).

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

840033172 is a wasteful number, since it uses less digits than its factorization.

840033172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2392 (or 2390 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 840033172 is about 28983.3257580975. The cubic root of 840033172 is about 943.5512161653.

The spelling of 840033172 in words is "eight hundred forty million, thirty-three thousand, one hundred seventy-two".