2257042220 has 24 divisors (see below), whose sum is σ = 4741072224. Its totient is φ = 902572416.

The previous prime is 2257042211. The next prime is 2257042223. The reversal of 2257042220 is 222407522.

2257042220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2257042220.

It is not an unprimeable number, because it can be changed into a prime (2257042223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72809 + ... + 99071.

It is an arithmetic number, because the mean of its divisors is an integer number (197544676).

Almost surely, 2^2257042220 is an apocalyptic number.

2257042220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2257042220 is an abundant number, since it is smaller than the sum of its proper divisors (2484030004).

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

2257042220 is a wasteful number, since it uses less digits than its factorization.

2257042220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30569 (or 30567 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 2257042220 is about 47508.3384260069. The cubic root of 2257042220 is about 1311.7363723672.

Adding to 2257042220 its reverse (222407522), we get a palindrome (2479449742).

The spelling of 2257042220 in words is "two billion, two hundred fifty-seven million, forty-two thousand, two hundred twenty".