2520378684 has 18 divisors (see below), whose sum is σ = 6370957320. Its totient is φ = 840126216.

The previous prime is 2520378667. The next prime is 2520378689. The reversal of 2520378684 is 4868730252.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520378689) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35005224 + ... + 35005295.

Almost surely, 2^2520378684 is an apocalyptic number.

It is an amenable number.

2520378684 is an abundant number, since it is smaller than the sum of its proper divisors (3850578636).

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

2520378684 is a wasteful number, since it uses less digits than its factorization.

2520378684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70010529 (or 70010524 counting only the distinct ones).

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

The square root of 2520378684 is about 50203.3732332799. The cubic root of 2520378684 is about 1360.8865838194.

The spelling of 2520378684 in words is "two billion, five hundred twenty million, three hundred seventy-eight thousand, six hundred eighty-four".