2153980 has 12 divisors (see below), whose sum is σ = 4523400. Its totient is φ = 861584.

The previous prime is 2153959. The next prime is 2153981. The reversal of 2153980 is 893512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153981) 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 3 ways as a sum of consecutive naturals, for example, 53830 + ... + 53869.

It is an arithmetic number, because the mean of its divisors is an integer number (376950).

2^2153980 is an apocalyptic number.

2153980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2153980 is an abundant number, since it is smaller than the sum of its proper divisors (2369420).

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

2153980 is a wasteful number, since it uses less digits than its factorization.

2153980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107708 (or 107706 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 2153980 is about 1467.6443710927. The cubic root of 2153980 is about 129.1458798785.

The spelling of 2153980 in words is "two million, one hundred fifty-three thousand, nine hundred eighty".