2299640 has 64 divisors (see below), whose sum is σ = 6082560. Its totient is φ = 766080.

The previous prime is 2299637. The next prime is 2299651. The reversal of 2299640 is 469922.

2299640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2299597 and 2299606.

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 15 ways as a sum of consecutive naturals, for example, 11945 + ... + 12135.

It is an arithmetic number, because the mean of its divisors is an integer number (95040).

2^2299640 is an apocalyptic number.

2299640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2299640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3041280).

2299640 is an abundant number, since it is smaller than the sum of its proper divisors (3782920).

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

2299640 is a wasteful number, since it uses less digits than its factorization.

2299640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 2299640 is about 1516.4563956804. The cubic root of 2299640 is about 131.9937248318.

The spelling of 2299640 in words is "two million, two hundred ninety-nine thousand, six hundred forty".