2520388764 has 24 divisors (see below), whose sum is σ = 6534341520. Its totient is φ = 840129552.

The previous prime is 2520388763. The next prime is 2520388807. The reversal of 2520388764 is 4678830252.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520388763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11668359 + ... + 11668574.

It is an arithmetic number, because the mean of its divisors is an integer number (272264230).

Almost surely, 2^2520388764 is an apocalyptic number.

It is an amenable number.

2520388764 is an abundant number, since it is smaller than the sum of its proper divisors (4013952756).

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

2520388764 is a wasteful number, since it uses less digits than its factorization.

2520388764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23336946 (or 23336938 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The square root of 2520388764 is about 50203.4736248399. The cubic root of 2520388764 is about 1360.8883980598. Note that the first 3 decimals are identical.

The spelling of 2520388764 in words is "two billion, five hundred twenty million, three hundred eighty-eight thousand, seven hundred sixty-four".