2520015820 has 48 divisors (see below), whose sum is σ = 6050903040. Its totient is φ = 863596224.

The previous prime is 2520015803. The next prime is 2520015821. The reversal of 2520015820 is 285100252.

It is not an unprimeable number, because it can be changed into a prime (2520015821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 536241 + ... + 540919.

It is an arithmetic number, because the mean of its divisors is an integer number (126060480).

Almost surely, 2^2520015820 is an apocalyptic number.

2520015820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2520015820 is an abundant number, since it is smaller than the sum of its proper divisors (3530887220).

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

2520015820 is a wasteful number, since it uses less digits than its factorization.

2520015820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8542 (or 8540 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 2520015820 is about 50199.7591627689. The cubic root of 2520015820 is about 1360.8212708233.

The spelling of 2520015820 in words is "two billion, five hundred twenty million, fifteen thousand, eight hundred twenty".