2156220600 has 48 divisors (see below), whose sum is σ = 6684285720. Its totient is φ = 574992000.

The previous prime is 2156220589. The next prime is 2156220611. The reversal of 2156220600 is 60226512.

It is an interprime number because it is at equal distance from previous prime (2156220589) and next prime (2156220611).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1796251 + ... + 1797450.

Almost surely, 2^2156220600 is an apocalyptic number.

2156220600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2156220600 is an abundant number, since it is smaller than the sum of its proper divisors (4528065120).

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

2156220600 is a wasteful number, since it uses less digits than its factorization.

2156220600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3593720 (or 3593711 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 2156220600 is about 46435.1224828793. The cubic root of 2156220600 is about 1291.9064414164.

The spelling of 2156220600 in words is "two billion, one hundred fifty-six million, two hundred twenty thousand, six hundred".