12303840 has 48 divisors (see below), whose sum is σ = 38758608. Its totient is φ = 3280896.

The previous prime is 12303839. The next prime is 12303847. The reversal of 12303840 is 4830321.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12303847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12337 + ... + 13296.

It is an arithmetic number, because the mean of its divisors is an integer number (807471).

Almost surely, 2^12303840 is an apocalyptic number.

12303840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12303840 is an abundant number, since it is smaller than the sum of its proper divisors (26454768).

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

12303840 is a wasteful number, since it uses less digits than its factorization.

12303840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25651 (or 25643 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 12303840 is about 3507.6829959391. The cubic root of 12303840 is about 230.8590433321.

The spelling of 12303840 in words is "twelve million, three hundred three thousand, eight hundred forty".