2220156520 has 64 divisors (see below), whose sum is σ = 5034960000. Its totient is φ = 881058048.

The previous prime is 2220156493. The next prime is 2220156527. The reversal of 2220156520 is 256510222.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2220156527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5011419 + ... + 5011861.

It is an arithmetic number, because the mean of its divisors is an integer number (78671250).

Almost surely, 2^2220156520 is an apocalyptic number.

2220156520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2220156520 is an abundant number, since it is smaller than the sum of its proper divisors (2814803480).

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

2220156520 is a wasteful number, since it uses less digits than its factorization.

2220156520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162 (or 1158 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2220156520 is about 47118.5369042800. The cubic root of 2220156520 is about 1304.5514074963.

Adding to 2220156520 its reverse (256510222), we get a palindrome (2476666742).

The spelling of 2220156520 in words is "two billion, two hundred twenty million, one hundred fifty-six thousand, five hundred twenty".