2289390 has 48 divisors (see below), whose sum is σ = 5905872. Its totient is φ = 566016.

The previous prime is 2289379. The next prime is 2289401. The reversal of 2289390 is 939822.

It is an interprime number because it is at equal distance from previous prime (2289379) and next prime (2289401).

It is a plaindrome in base 16.

It is a zygodrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34137 + ... + 34203.

It is an arithmetic number, because the mean of its divisors is an integer number (123039).

2^2289390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2289390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2952936).

2289390 is an abundant number, since it is smaller than the sum of its proper divisors (3616482).

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

2289390 is a wasteful number, since it uses less digits than its factorization.

2289390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 2289390 is about 1513.0730319453. The cubic root of 2289390 is about 131.7973244123.

The spelling of 2289390 in words is "two million, two hundred eighty-nine thousand, three hundred ninety".