12302840 has 32 divisors (see below), whose sum is σ = 30198960. Its totient is φ = 4473600.

The previous prime is 12302831. The next prime is 12302863. The reversal of 12302840 is 4820321.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 13541 + ... + 14420.

Almost surely, 2^12302840 is an apocalyptic number.

12302840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12302840 is an abundant number, since it is smaller than the sum of its proper divisors (17896120).

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

12302840 is a wasteful number, since it uses less digits than its factorization.

12302840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27983 (or 27979 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 12302840 is about 3507.5404488045. The cubic root of 12302840 is about 230.8527887726.

The spelling of 12302840 in words is "twelve million, three hundred two thousand, eight hundred forty".