2170990320 has 80 divisors (see below), whose sum is σ = 6740571552. Its totient is φ = 578027520.

The previous prime is 2170990313. The next prime is 2170990333. The reversal of 2170990320 is 230990712.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154800 + ... + 168240.

Almost surely, 2^2170990320 is an apocalyptic number.

2170990320 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 2170990320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3370285776).

2170990320 is an abundant number, since it is smaller than the sum of its proper divisors (4569581232).

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

2170990320 is a wasteful number, since it uses less digits than its factorization.

2170990320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14130 (or 14124 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 2170990320 is about 46593.8871527156. The cubic root of 2170990320 is about 1294.8495067188.

The spelling of 2170990320 in words is "two billion, one hundred seventy million, nine hundred ninety thousand, three hundred twenty".