2299440 has 160 divisors (see below), whose sum is σ = 8499456. Its totient is φ = 506880.

The previous prime is 2299433. The next prime is 2299447. The reversal of 2299440 is 449922.

2299440 is a nontrivial binomial coefficient, being equal to C(2145, 2).

It is an interprime number because it is at equal distance from previous prime (2299433) and next prime (2299447).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2299398 and 2299407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2299447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34287 + ... + 34353.

2^2299440 is an apocalyptic number.

2299440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

2299440 is the 2144-th triangular number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2299440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4249728).

2299440 is an abundant number, since it is smaller than the sum of its proper divisors (6200016).

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

2299440 is a wasteful number, since it uses less digits than its factorization.

2299440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 2299440 is about 1516.3904510383. The cubic root of 2299440 is about 131.9898982168.

It can be divided in two parts, 229 and 9440, that added together give a palindrome (9669).

The spelling of 2299440 in words is "two million, two hundred ninety-nine thousand, four hundred forty".