2290405 has 16 divisors (see below), whose sum is σ = 2991744. Its totient is φ = 1673280.

The previous prime is 2290403. The next prime is 2290423. The reversal of 2290405 is 5040922.

It is a happy number.

It is not a de Polignac number, because 2290405 - 2¹ = 2290403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2290403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10750 + ... + 10960.

It is an arithmetic number, because the mean of its divisors is an integer number (186984).

2^2290405 is an apocalyptic number.

It is an amenable number.

2290405 is a deficient number, since it is larger than the sum of its proper divisors (701339).

2290405 is a wasteful number, since it uses less digits than its factorization.

2290405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 2290405 is about 1513.4084048927. The cubic root of 2290405 is about 131.8167989622.

The spelling of 2290405 in words is "two million, two hundred ninety thousand, four hundred five".