2261390 has 16 divisors (see below), whose sum is σ = 4112640. Its totient is φ = 895200.

The previous prime is 2261377. The next prime is 2261393. The reversal of 2261390 is 931622.

It is a super-2 number, since 2×2261390² = 10227769464200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2261393) 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, 110 + ... + 2129.

It is an arithmetic number, because the mean of its divisors is an integer number (257040).

2^2261390 is an apocalyptic number.

2261390 is a deficient number, since it is larger than the sum of its proper divisors (1851250).

2261390 is a wasteful number, since it uses less digits than its factorization.

2261390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2347.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 2261390 is about 1503.7918738974. The cubic root of 2261390 is about 131.2578105707.

The spelling of 2261390 in words is "two million, two hundred sixty-one thousand, three hundred ninety".