840922272 has 72 divisors (see below), whose sum is σ = 2532056436. Its totient is φ = 263817216.

The previous prime is 840922267. The next prime is 840922283. The reversal of 840922272 is 272229048.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 651474576 + 189447696 = 25524^2 + 13764^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80983 + ... + 90774.

Almost surely, 2^840922272 is an apocalyptic number.

It is an amenable number.

840922272 is an abundant number, since it is smaller than the sum of its proper divisors (1691134164).

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

840922272 is a wasteful number, since it uses less digits than its factorization.

840922272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171790 (or 171779 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 840922272 is about 28998.6598311025. The cubic root of 840922272 is about 943.8839869880.

The spelling of 840922272 in words is "eight hundred forty million, nine hundred twenty-two thousand, two hundred seventy-two".