2173290 has 64 divisors (see below), whose sum is σ = 6082560. Its totient is φ = 486720.

The previous prime is 2173243. The next prime is 2173307. The reversal of 2173290 is 923712.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2173290.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16525 + ... + 16655.

It is an arithmetic number, because the mean of its divisors is an integer number (95040).

2^2173290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2173290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3041280).

2173290 is an abundant number, since it is smaller than the sum of its proper divisors (3909270).

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

2173290 is a wasteful number, since it uses less digits than its factorization.

2173290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 2173290 is about 1474.2082620851. The cubic root of 2173290 is about 129.5306546791.

The spelling of 2173290 in words is "two million, one hundred seventy-three thousand, two hundred ninety".