2257345420 has 48 divisors (see below), whose sum is σ = 5242251168. Its totient is φ = 809602560.

The previous prime is 2257345417. The next prime is 2257345421. The reversal of 2257345420 is 245437522.

It is not an unprimeable number, because it can be changed into a prime (2257345421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54219 + ... + 86338.

It is an arithmetic number, because the mean of its divisors is an integer number (109213566).

Almost surely, 2^2257345420 is an apocalyptic number.

2257345420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2257345420 is an abundant number, since it is smaller than the sum of its proper divisors (2984905748).

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

2257345420 is a wasteful number, since it uses less digits than its factorization.

2257345420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140650 (or 140648 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 34.

The square root of 2257345420 is about 47511.5293376250. The cubic root of 2257345420 is about 1311.7951071510.

The spelling of 2257345420 in words is "two billion, two hundred fifty-seven million, three hundred forty-five thousand, four hundred twenty".