2252679978 has 8 divisors (see below), whose sum is σ = 4505359968. Its totient is φ = 750893324.

The previous prime is 2252679971. The next prime is 2252680021. The reversal of 2252679978 is 8799762522.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

2252679978 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (2252679971) by changing a digit.

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, 187723326 + ... + 187723337.

It is an arithmetic number, because the mean of its divisors is an integer number (563169996).

Almost surely, 2^2252679978 is an apocalyptic number.

2252679978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2252679978 is a wasteful number, since it uses less digits than its factorization.

2252679978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375446668.

The product of its digits is 7620480, while the sum is 57.

The square root of 2252679978 is about 47462.4059440733. The cubic root of 2252679978 is about 1310.8907521078.

The spelling of 2252679978 in words is "two billion, two hundred fifty-two million, six hundred seventy-nine thousand, nine hundred seventy-eight".