2289990 has 16 divisors (see below), whose sum is σ = 5496048. Its totient is φ = 610656.

The previous prime is 2289979. The next prime is 2290003. The reversal of 2289990 is 999822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38137 + ... + 38196.

It is an arithmetic number, because the mean of its divisors is an integer number (343503).

2^2289990 is an apocalyptic number.

2289990 is an abundant number, since it is smaller than the sum of its proper divisors (3206058).

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

2289990 is a wasteful number, since it uses less digits than its factorization.

2289990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76343.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 2289990 is about 1513.2712909455. The cubic root of 2289990 is about 131.8088371569.

The spelling of 2289990 in words is "two million, two hundred eighty-nine thousand, nine hundred ninety".