2116530 has 96 divisors (see below), whose sum is σ = 6237504. Its totient is φ = 513216.

The previous prime is 2116523. The next prime is 2116531. The reversal of 2116530 is 356112.

2116530 is a `hidden beast` number, since 2 + 11 + 653 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2116531) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31557 + ... + 31623.

It is an arithmetic number, because the mean of its divisors is an integer number (64974).

2^2116530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2116530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3118752).

2116530 is an abundant number, since it is smaller than the sum of its proper divisors (4120974).

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

2116530 is a wasteful number, since it uses less digits than its factorization.

2116530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 2116530 is about 1454.8298869627. The cubic root of 2116530 is about 128.3930383159.

The spelling of 2116530 in words is "two million, one hundred sixteen thousand, five hundred thirty".