2160900 has 135 divisors (see below), whose sum is σ = 7901621. Its totient is φ = 493920.

The previous prime is 2160883. The next prime is 2160913. The reversal of 2160900 is 90612.

The square root of 2160900 is 1470.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 777924 + 1382976 = 882^2 + 1176^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 308697 + ... + 308703.

2^2160900 is an apocalyptic number.

2160900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

2160900 is the 1470-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2160900

2160900 is an abundant number, since it is smaller than the sum of its proper divisors (5740721).

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

2160900 is a wasteful number, since it uses less digits than its factorization.

2160900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The cubic root of 2160900 is about 129.2840325313.

The spelling of 2160900 in words is "two million, one hundred sixty thousand, nine hundred".