2156360 has 64 divisors (see below), whose sum is σ = 5253120. Its totient is φ = 794880.

The previous prime is 2156359. The next prime is 2156369. The reversal of 2156360 is 636512.

2156360 = 188² + 189² + ... + 235².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156369) 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, 45857 + ... + 45903.

It is an arithmetic number, because the mean of its divisors is an integer number (82080).

2^2156360 is an apocalyptic number.

2156360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2156360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2626560).

2156360 is an abundant number, since it is smaller than the sum of its proper divisors (3096760).

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

2156360 is a wasteful number, since it uses less digits than its factorization.

2156360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 2156360 is about 1468.4549703685. The cubic root of 2156360 is about 129.1934281468.

The spelling of 2156360 in words is "two million, one hundred fifty-six thousand, three hundred sixty".