2540640504 has 64 divisors (see below), whose sum is σ = 6395558400. Its totient is φ = 841044096.

The previous prime is 2540640491. The next prime is 2540640511. The reversal of 2540640504 is 4050460452.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3086637 + ... + 3087459.

It is an arithmetic number, because the mean of its divisors is an integer number (99930600).

Almost surely, 2^2540640504 is an apocalyptic number.

2540640504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2540640504 is an abundant number, since it is smaller than the sum of its proper divisors (3854917896).

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

2540640504 is a wasteful number, since it uses less digits than its factorization.

2540640504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564 (or 1560 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 2540640504 is about 50404.7666793529. The cubic root of 2540640504 is about 1364.5236663989.

The spelling of 2540640504 in words is "two billion, five hundred forty million, six hundred forty thousand, five hundred four".