2272391388 has 48 divisors (see below), whose sum is σ = 6081438720. Its totient is φ = 733028400.

The previous prime is 2272391353. The next prime is 2272391417. The reversal of 2272391388 is 8831932722.

2272391388 is a `hidden beast` number, since 227 + 2 + 391 + 38 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 336018 + ... + 342713.

It is an arithmetic number, because the mean of its divisors is an integer number (126696640).

Almost surely, 2^2272391388 is an apocalyptic number.

It is an amenable number.

2272391388 is an abundant number, since it is smaller than the sum of its proper divisors (3809047332).

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

2272391388 is a wasteful number, since it uses less digits than its factorization.

2272391388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678775 (or 678767 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 2272391388 is about 47669.6065433731. The cubic root of 2272391388 is about 1314.7031744375.

The spelling of 2272391388 in words is "two billion, two hundred seventy-two million, three hundred ninety-one thousand, three hundred eighty-eight".