2428712657 has 4 divisors (see below), whose sum is σ = 2775671616. Its totient is φ = 2081753700.

The previous prime is 2428712609. The next prime is 2428712659. The reversal of 2428712657 is 7562178242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7562178242 = 2 ⋅3781089121.

It is a cyclic number.

It is not a de Polignac number, because 2428712657 - 2²⁶ = 2361603793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2428712659) 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, 173479469 + ... + 173479482.

It is an arithmetic number, because the mean of its divisors is an integer number (693917904).

Almost surely, 2^2428712657 is an apocalyptic number.

It is an amenable number.

2428712657 is a deficient number, since it is larger than the sum of its proper divisors (346958959).

2428712657 is an equidigital number, since it uses as much as digits as its factorization.

2428712657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346958958.

The product of its digits is 376320, while the sum is 44.

The square root of 2428712657 is about 49281.9709122921. The cubic root of 2428712657 is about 1344.1839703006.

The spelling of 2428712657 in words is "two billion, four hundred twenty-eight million, seven hundred twelve thousand, six hundred fifty-seven".