2261790 has 32 divisors (see below), whose sum is σ = 6032160. Its totient is φ = 603072.

The previous prime is 2261789. The next prime is 2261801. The reversal of 2261790 is 971622.

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

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, 3919 + ... + 4458.

It is an arithmetic number, because the mean of its divisors is an integer number (188505).

2^2261790 is an apocalyptic number.

2261790 is an abundant number, since it is smaller than the sum of its proper divisors (3770370).

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

2261790 is a wasteful number, since it uses less digits than its factorization.

2261790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8393 (or 8387 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 2261790 is about 1503.9248651445. The cubic root of 2261790 is about 131.2655491782.

It can be divided in two parts, 226 and 1790, that added together give a triangular number (2016 = T₆₃).

The spelling of 2261790 in words is "two million, two hundred sixty-one thousand, seven hundred ninety".