12478432 has 24 divisors (see below), whose sum is σ = 25168752. Its totient is φ = 6086400.

The previous prime is 12478409. The next prime is 12478451. The reversal of 12478432 is 23487421.

It is a super-2 number, since 2×12478432² = 311422530357248, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12478394 and 12478403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3444 + ... + 6067.

It is an arithmetic number, because the mean of its divisors is an integer number (1048698).

Almost surely, 2^12478432 is an apocalyptic number.

It is an amenable number.

12478432 is an abundant number, since it is smaller than the sum of its proper divisors (12690320).

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

12478432 is an equidigital number, since it uses as much as digits as its factorization.

12478432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9562 (or 9554 counting only the distinct ones).

The product of its digits is 10752, while the sum is 31.

The square root of 12478432 is about 3532.4824132612. The cubic root of 12478432 is about 231.9458851193.

The spelling of 12478432 in words is "twelve million, four hundred seventy-eight thousand, four hundred thirty-two".