2708257540 has 48 divisors (see below), whose sum is σ = 5770805040. Its totient is φ = 1067489280.

The previous prime is 2708257529. The next prime is 2708257543. The reversal of 2708257540 is 457528072.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 302551236 + 2405706304 = 17394^2 + 49048^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2708257493 and 2708257502.

It is not an unprimeable number, because it can be changed into a prime (2708257543) 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, 554710 + ... + 559570.

It is an arithmetic number, because the mean of its divisors is an integer number (120225105).

Almost surely, 2^2708257540 is an apocalyptic number.

2708257540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2708257540 is an abundant number, since it is smaller than the sum of its proper divisors (3062547500).

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

2708257540 is a wasteful number, since it uses less digits than its factorization.

2708257540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5272 (or 5270 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 40.

The square root of 2708257540 is about 52040.9217827663. The cubic root of 2708257540 is about 1393.8947648300.

The spelling of 2708257540 in words is "two billion, seven hundred eight million, two hundred fifty-seven thousand, five hundred forty".