2309240 has 16 divisors (see below), whose sum is σ = 5195880. Its totient is φ = 923680.

The previous prime is 2309239. The next prime is 2309257. The reversal of 2309240 is 429032.

2309240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

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, 28826 + ... + 28905.

2^2309240 is an apocalyptic number.

2309240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2309240 is an abundant number, since it is smaller than the sum of its proper divisors (2886640).

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

2309240 is a wasteful number, since it uses less digits than its factorization.

2309240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57742 (or 57738 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 2309240 is about 1519.6183731450. The cubic root of 2309240 is about 132.1771420309.

It can be divided in two parts, 23092 and 40, that added together give a palindrome (23132).

The spelling of 2309240 in words is "two million, three hundred nine thousand, two hundred forty".