2299840 has 28 divisors (see below), whose sum is σ = 5477256. Its totient is φ = 919808.

The previous prime is 2299837. The next prime is 2299841. The reversal of 2299840 is 489922.

It is a junction number, because it is equal to n+sod(n) for n = 2299796 and 2299805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2299841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3274 + ... + 3913.

2^2299840 is an apocalyptic number.

2299840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2299840 is an abundant number, since it is smaller than the sum of its proper divisors (3177416).

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

2299840 is an equidigital number, since it uses as much as digits as its factorization.

2299840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7204 (or 7194 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 2299840 is about 1516.5223374550. The cubic root of 2299840 is about 131.9975512249.

The spelling of 2299840 in words is "two million, two hundred ninety-nine thousand, eight hundred forty".