2257978732 has 12 divisors (see below), whose sum is σ = 4047840216. Its totient is φ = 1101452960.

The previous prime is 2257978721. The next prime is 2257978741. The reversal of 2257978732 is 2378797522.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2257978732.

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 3 ways as a sum of consecutive naturals, for example, 6883918 + ... + 6884245.

It is an arithmetic number, because the mean of its divisors is an integer number (337320018).

Almost surely, 2^2257978732 is an apocalyptic number.

It is an amenable number.

2257978732 is a deficient number, since it is larger than the sum of its proper divisors (1789861484).

2257978732 is a wasteful number, since it uses less digits than its factorization.

2257978732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13768208 (or 13768206 counting only the distinct ones).

The product of its digits is 2963520, while the sum is 52.

The square root of 2257978732 is about 47518.1936946261. The cubic root of 2257978732 is about 1311.9177730479.

The spelling of 2257978732 in words is "two billion, two hundred fifty-seven million, nine hundred seventy-eight thousand, seven hundred thirty-two".