2520778530 has 32 divisors (see below), whose sum is σ = 6405744384. Its totient is φ = 632665856.

The previous prime is 2520778529. The next prime is 2520778543. The reversal of 2520778530 is 358770252.

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, 2470842 + ... + 2471861.

It is an arithmetic number, because the mean of its divisors is an integer number (200179512).

Almost surely, 2^2520778530 is an apocalyptic number.

2520778530 is an abundant number, since it is smaller than the sum of its proper divisors (3884965854).

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

2520778530 is a wasteful number, since it uses less digits than its factorization.

2520778530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4942730.

The product of its (nonzero) digits is 117600, while the sum is 39.

The square root of 2520778530 is about 50207.3553376395. The cubic root of 2520778530 is about 1360.9585460590.

The spelling of 2520778530 in words is "two billion, five hundred twenty million, seven hundred seventy-eight thousand, five hundred thirty".