2305988 has 12 divisors (see below), whose sum is σ = 4144812. Its totient is φ = 1121760.

The previous prime is 2305987. The next prime is 2306023. The reversal of 2305988 is 8895032.

2305988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1444804 + 861184 = 1202^2 + 928^2 .

It is a super-2 number, since 2×2305988² = 10635161312288, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2305987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7643 + ... + 7938.

It is an arithmetic number, because the mean of its divisors is an integer number (345401).

2^2305988 is an apocalyptic number.

It is an amenable number.

2305988 is a deficient number, since it is larger than the sum of its proper divisors (1838824).

2305988 is a wasteful number, since it uses less digits than its factorization.

2305988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15622 (or 15620 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 2305988 is about 1518.5479906806. The cubic root of 2305988 is about 132.1150664853.

The spelling of 2305988 in words is "two million, three hundred five thousand, nine hundred eighty-eight".