2257747620 has 48 divisors (see below), whose sum is σ = 6596553600. Its totient is φ = 575888896.

The previous prime is 2257747603. The next prime is 2257747651. The reversal of 2257747620 is 267477522.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 816645 + ... + 819404.

It is an arithmetic number, because the mean of its divisors is an integer number (137428200).

Almost surely, 2^2257747620 is an apocalyptic number.

2257747620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2257747620 is an abundant number, since it is smaller than the sum of its proper divisors (4338805980).

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

2257747620 is a wasteful number, since it uses less digits than its factorization.

2257747620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636084 (or 1636082 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 42.

The square root of 2257747620 is about 47515.7618059523. The cubic root of 2257747620 is about 1311.8730117339.

The spelling of 2257747620 in words is "two billion, two hundred fifty-seven million, seven hundred forty-seven thousand, six hundred twenty".