2115960 has 128 divisors (see below), whose sum is σ = 7948800. Its totient is φ = 437760.

The previous prime is 2115943. The next prime is 2115961. The reversal of 2115960 is 695112.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2115960.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9126 + ... + 9354.

It is an arithmetic number, because the mean of its divisors is an integer number (62100).

2^2115960 is an apocalyptic number.

2115960 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 2115960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3974400).

2115960 is an abundant number, since it is smaller than the sum of its proper divisors (5832840).

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

2115960 is a wasteful number, since it uses less digits than its factorization.

2115960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 2115960 is about 1454.6339745792. The cubic root of 2115960 is about 128.3815114925.

The spelling of 2115960 in words is "two million, one hundred fifteen thousand, nine hundred sixty".