2540128020 has 24 divisors (see below), whose sum is σ = 7112358624. Its totient is φ = 677367456.

The previous prime is 2540128007. The next prime is 2540128037. The reversal of 2540128020 is 208210452.

2540128020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 21167674 + ... + 21167793.

It is an arithmetic number, because the mean of its divisors is an integer number (296348276).

Almost surely, 2^2540128020 is an apocalyptic number.

2540128020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2540128020 is an abundant number, since it is smaller than the sum of its proper divisors (4572230604).

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

2540128020 is a wasteful number, since it uses less digits than its factorization.

2540128020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42335479 (or 42335477 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 2540128020 is about 50399.6827370967. The cubic root of 2540128020 is about 1364.4319121647.

Adding to 2540128020 its reverse (208210452), we get a palindrome (2748338472).

The spelling of 2540128020 in words is "two billion, five hundred forty million, one hundred twenty-eight thousand, twenty".