2257426920 has 128 divisors (see below), whose sum is σ = 7904563200. Its totient is φ = 504996096.

The previous prime is 2257426901. The next prime is 2257426921. The reversal of 2257426920 is 296247522.

It is not an unprimeable number, because it can be changed into a prime (2257426921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10891 + ... + 68069.

It is an arithmetic number, because the mean of its divisors is an integer number (61754400).

Almost surely, 2^2257426920 is an apocalyptic number.

2257426920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2257426920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3952281600).

2257426920 is an abundant number, since it is smaller than the sum of its proper divisors (5647136280).

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

2257426920 is a wasteful number, since it uses less digits than its factorization.

2257426920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57247 (or 57243 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 2257426920 is about 47512.3870164402. The cubic root of 2257426920 is about 1311.8108941330.

It can be divided in two parts, 22574 and 26920, that added together give a palindrome (49494).

The spelling of 2257426920 in words is "two billion, two hundred fifty-seven million, four hundred twenty-six thousand, nine hundred twenty".