2539728648 has 32 divisors (see below), whose sum is σ = 7054802400. Its totient is φ = 846576144.

The previous prime is 2539728629. The next prime is 2539728673. The reversal of 2539728648 is 8468279352.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 2539728594 and 2539728603.

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, 5878786 + ... + 5879217.

It is an arithmetic number, because the mean of its divisors is an integer number (220462575).

Almost surely, 2^2539728648 is an apocalyptic number.

It is an amenable number.

2539728648 is an abundant number, since it is smaller than the sum of its proper divisors (4515073752).

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

2539728648 is a wasteful number, since it uses less digits than its factorization.

2539728648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11758018 (or 11758008 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The square root of 2539728648 is about 50395.7205326008. The cubic root of 2539728648 is about 1364.3604007477.

It can be divided in two parts, 25397 and 28648, that added together give a palindrome (54045).

The spelling of 2539728648 in words is "two billion, five hundred thirty-nine million, seven hundred twenty-eight thousand, six hundred forty-eight".