2257047644 has 12 divisors (see below), whose sum is σ = 3951000144. Its totient is φ = 1128190464.

The previous prime is 2257047643. The next prime is 2257047647. The reversal of 2257047644 is 4467407522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2257047643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67784 + ... + 95439.

It is an arithmetic number, because the mean of its divisors is an integer number (329250012).

Almost surely, 2^2257047644 is an apocalyptic number.

It is an amenable number.

2257047644 is a deficient number, since it is larger than the sum of its proper divisors (1693952500).

2257047644 is a wasteful number, since it uses less digits than its factorization.

2257047644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166684 (or 166682 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 41.

The square root of 2257047644 is about 47508.3955106884. The cubic root of 2257047644 is about 1311.7374231307.

The spelling of 2257047644 in words is "two billion, two hundred fifty-seven million, forty-seven thousand, six hundred forty-four".