2303502640 has 40 divisors (see below), whose sum is σ = 5358192768. Its totient is φ = 920962560.

The previous prime is 2303502613. The next prime is 2303502653. The reversal of 2303502640 is 462053032.

It is a happy number.

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

It is a super-2 number, since 2×2303502640² = 10612248824973939200, which contains 22 as substring.

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, 201724 + ... + 212836.

Almost surely, 2^2303502640 is an apocalyptic number.

2303502640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2303502640 is an abundant number, since it is smaller than the sum of its proper divisors (3054690128).

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

2303502640 is a wasteful number, since it uses less digits than its factorization.

2303502640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13717 (or 13711 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 2303502640 is about 47994.8188870424. The cubic root of 2303502640 is about 1320.6758553032.

Adding to 2303502640 its reverse (462053032), we get a palindrome (2765555672).

The spelling of 2303502640 in words is "two billion, three hundred three million, five hundred two thousand, six hundred forty".