2271790 has 16 divisors (see below), whose sum is σ = 4118112. Its totient is φ = 902304.

The previous prime is 2271781. The next prime is 2271791. The reversal of 2271790 is 971722.

It is a happy number.

It is a super-2 number, since 2×2271790² = 10322059608200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2271791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 847 + ... + 2293.

It is an arithmetic number, because the mean of its divisors is an integer number (257382).

2^2271790 is an apocalyptic number.

2271790 is a deficient number, since it is larger than the sum of its proper divisors (1846322).

2271790 is a wasteful number, since it uses less digits than its factorization.

2271790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 2271790 is about 1507.2458326365. The cubic root of 2271790 is about 131.4587185547.

The spelling of 2271790 in words is "two million, two hundred seventy-one thousand, seven hundred ninety".