12427992 has 56 divisors (see below), whose sum is σ = 34954140. Its totient is φ = 4140720.

The previous prime is 12427991. The next prime is 12427997. The reversal of 12427992 is 29972421.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12427991) by changing a digit.

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 13 ways as a sum of consecutive naturals, for example, 4767 + ... + 6897.

Almost surely, 2^12427992 is an apocalyptic number.

12427992 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 12427992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17477070).

12427992 is an abundant number, since it is smaller than the sum of its proper divisors (22526148).

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

12427992 is an equidigital number, since it uses as much as digits as its factorization.

12427992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2155 (or 2136 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 12427992 is about 3525.3357286931. The cubic root of 12427992 is about 231.6329411654.

The spelling of 12427992 in words is "twelve million, four hundred twenty-seven thousand, nine hundred ninety-two".