2207790 has 128 divisors (see below), whose sum is σ = 6894720. Its totient is φ = 497664.

The previous prime is 2207783. The next prime is 2207791. The reversal of 2207790 is 977022.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2207791) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 59652 + ... + 59688.

It is an arithmetic number, because the mean of its divisors is an integer number (53865).

2^2207790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2207790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3447360).

2207790 is an abundant number, since it is smaller than the sum of its proper divisors (4686930).

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

2207790 is a wasteful number, since it uses less digits than its factorization.

2207790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 2207790 is about 1485.8633853757. The cubic root of 2207790 is about 130.2124730559.

The spelling of 2207790 in words is "two million, two hundred seven thousand, seven hundred ninety".