2170992 has 40 divisors (see below), whose sum is σ = 5793280. Its totient is φ = 699840.

The previous prime is 2170943. The next prime is 2171003. The reversal of 2170992 is 2990712.

It is a nialpdrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 759 + ... + 2217.

It is an arithmetic number, because the mean of its divisors is an integer number (144832).

2^2170992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2170992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2896640).

2170992 is an abundant number, since it is smaller than the sum of its proper divisors (3622288).

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

2170992 is a wasteful number, since it uses less digits than its factorization.

2170992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1501 (or 1495 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 2170992 is about 1473.4286545334. The cubic root of 2170992 is about 129.4849840721.

The spelling of 2170992 in words is "two million, one hundred seventy thousand, nine hundred ninety-two".