8257402680 has 64 divisors (see below), whose sum is σ = 24991472160. Its totient is φ = 2182483968.

The previous prime is 8257402613. The next prime is 8257402687. The reversal of 8257402680 is 862047528.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8257402687) 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, 290917 + ... + 318036.

Almost surely, 2^8257402680 is an apocalyptic number.

It is an amenable number.

8257402680 is an abundant number, since it is smaller than the sum of its proper divisors (16734069480).

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

8257402680 is a wasteful number, since it uses less digits than its factorization.

8257402680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609080 (or 609076 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 8257402680 is about 90870.2518979671. The cubic root of 8257402680 is about 2021.2241934083.

The spelling of 8257402680 in words is "eight billion, two hundred fifty-seven million, four hundred two thousand, six hundred eighty".