2522728640 has 56 divisors (see below), whose sum is σ = 6023896512. Its totient is φ = 1006295040.

The previous prime is 2522728639. The next prime is 2522728721. The reversal of 2522728640 is 468272252.

It is a junction number, because it is equal to n+sod(n) for n = 2522728594 and 2522728603.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106700 + ... + 128180.

Almost surely, 2^2522728640 is an apocalyptic number.

2522728640 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 2522728640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3011948256).

2522728640 is an abundant number, since it is smaller than the sum of its proper divisors (3501167872).

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

2522728640 is a wasteful number, since it uses less digits than its factorization.

2522728640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21865 (or 21855 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 38.

The square root of 2522728640 is about 50226.7721439473. The cubic root of 2522728640 is about 1361.3094078711.

The spelling of 2522728640 in words is "two billion, five hundred twenty-two million, seven hundred twenty-eight thousand, six hundred forty".