2302640 has 40 divisors (see below), whose sum is σ = 5423760. Its totient is φ = 909056.

The previous prime is 2302631. The next prime is 2302661. The reversal of 2302640 is 462032.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8426 + ... + 8694.

It is an arithmetic number, because the mean of its divisors is an integer number (135594).

2^2302640 is an apocalyptic number.

2302640 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 2302640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2711880).

2302640 is an abundant number, since it is smaller than the sum of its proper divisors (3121120).

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

2302640 is a wasteful number, since it uses less digits than its factorization.

2302640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 2302640 is about 1517.4452214166. The cubic root of 2302640 is about 132.0510974505.

Adding to 2302640 its reverse (462032), we get a palindrome (2764672).

The spelling of 2302640 in words is "two million, three hundred two thousand, six hundred forty".