12555432 has 64 divisors (see below), whose sum is σ = 35841600. Its totient is φ = 4069440.

The previous prime is 12555397. The next prime is 12555443. The reversal of 12555432 is 23455521.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 12555396 and 12555405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7207 + ... + 8777.

It is an arithmetic number, because the mean of its divisors is an integer number (560025).

Almost surely, 2^12555432 is an apocalyptic number.

12555432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12555432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17920800).

12555432 is an abundant number, since it is smaller than the sum of its proper divisors (23286168).

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

12555432 is a wasteful number, since it uses less digits than its factorization.

12555432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623 (or 1613 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 12555432 is about 3543.3645028419. The cubic root of 12555432 is about 232.4219925607.

The spelling of 12555432 in words is "twelve million, five hundred fifty-five thousand, four hundred thirty-two".