2268990 has 48 divisors (see below), whose sum is σ = 6250608. Its totient is φ = 569088.

The previous prime is 2268979. The next prime is 2268991. The reversal of 2268990 is 998622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2268991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 789 + ... + 2271.

It is an arithmetic number, because the mean of its divisors is an integer number (130221).

2^2268990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2268990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3125304).

2268990 is an abundant number, since it is smaller than the sum of its proper divisors (3981618).

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

2268990 is a wasteful number, since it uses less digits than its factorization.

2268990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513 (or 1510 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 2268990 is about 1506.3166997680. The cubic root of 2268990 is about 131.4046883644.

It can be divided in two parts, 226 and 8990, that added together give a square (9216 = 96²).

The spelling of 2268990 in words is "two million, two hundred sixty-eight thousand, nine hundred ninety".