2252640478 has 8 divisors (see below), whose sum is σ = 3686139000. Its totient is φ = 1023927480.

The previous prime is 2252640457. The next prime is 2252640571. The reversal of 2252640478 is 8740462522.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2252640478.

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 3 ways as a sum of consecutive naturals, for example, 51196353 + ... + 51196396.

It is an arithmetic number, because the mean of its divisors is an integer number (460767375).

Almost surely, 2^2252640478 is an apocalyptic number.

2252640478 is a deficient number, since it is larger than the sum of its proper divisors (1433498522).

2252640478 is a wasteful number, since it uses less digits than its factorization.

2252640478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102392762.

The product of its (nonzero) digits is 215040, while the sum is 40.

The square root of 2252640478 is about 47461.9898234366. The cubic root of 2252640478 is about 1310.8830900508.

The spelling of 2252640478 in words is "two billion, two hundred fifty-two million, six hundred forty thousand, four hundred seventy-eight".