12430840 has 16 divisors (see below), whose sum is σ = 27969480. Its totient is φ = 4972320.

The previous prime is 12430837. The next prime is 12430849. The reversal of 12430840 is 4803421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12430849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155346 + ... + 155425.

Almost surely, 2^12430840 is an apocalyptic number.

12430840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12430840 is an abundant number, since it is smaller than the sum of its proper divisors (15538640).

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

12430840 is a wasteful number, since it uses less digits than its factorization.

12430840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310782 (or 310778 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 12430840 is about 3525.7396387141. The cubic root of 12430840 is about 231.6506334906.

The spelling of 12430840 in words is "twelve million, four hundred thirty thousand, eight hundred forty".