2115100 has 36 divisors (see below), whose sum is σ = 4945864. Its totient is φ = 780480.

The previous prime is 2115097. The next prime is 2115101. The reversal of 2115100 is 15112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 487 + ... + 2113.

2^2115100 is an apocalyptic number.

2115100 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 2115100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2472932).

2115100 is an abundant number, since it is smaller than the sum of its proper divisors (2830764).

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

2115100 is a wasteful number, since it uses less digits than its factorization.

2115100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654 (or 1647 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 10.

The square root of 2115100 is about 1454.3383375267. The cubic root of 2115100 is about 128.3641162265.

The spelling of 2115100 in words is "two million, one hundred fifteen thousand, one hundred".