2190870 has 48 divisors (see below), whose sum is σ = 6216912. Its totient is φ = 530880.

The previous prime is 2190857. The next prime is 2190887. The reversal of 2190870 is 780912.

It is a super-2 number, since 2×2190870² = 9599822713800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117 + ... + 2096.

It is an arithmetic number, because the mean of its divisors is an integer number (129519).

2^2190870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2190870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3108456).

2190870 is an abundant number, since it is smaller than the sum of its proper divisors (4026042).

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

2190870 is a wasteful number, since it uses less digits than its factorization.

2190870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237 (or 2234 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 2190870 is about 1480.1587752670. The cubic root of 2190870 is about 129.8789800770.

The spelling of 2190870 in words is "two million, one hundred ninety thousand, eight hundred seventy".