2257878290 has 16 divisors (see below), whose sum is σ = 4303250712. Its totient is φ = 850024704.

The previous prime is 2257878251. The next prime is 2257878353. The reversal of 2257878290 is 928787522.

It can be written as a sum of positive squares in 4 ways, for example, as 1711394161 + 546484129 = 41369^2 + 23377^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6640649 + ... + 6640988.

Almost surely, 2^2257878290 is an apocalyptic number.

2257878290 is a deficient number, since it is larger than the sum of its proper divisors (2045372422).

2257878290 is a wasteful number, since it uses less digits than its factorization.

2257878290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13281661.

The product of its (nonzero) digits is 1128960, while the sum is 50.

The square root of 2257878290 is about 47517.1368034733. The cubic root of 2257878290 is about 1311.8983200157.

The spelling of 2257878290 in words is "two billion, two hundred fifty-seven million, eight hundred seventy-eight thousand, two hundred ninety".