12427400 has 24 divisors (see below), whose sum is σ = 28894170. Its totient is φ = 4970880.

The previous prime is 12427381. The next prime is 12427403. The reversal of 12427400 is 472421.

It can be written as a sum of positive squares in 3 ways, for example, as 10982596 + 1444804 = 3314^2 + 1202^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12427403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30869 + ... + 31268.

Almost surely, 2^12427400 is an apocalyptic number.

12427400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12427400 is an abundant number, since it is smaller than the sum of its proper divisors (16466770).

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

12427400 is a wasteful number, since it uses less digits than its factorization.

12427400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62153 (or 62144 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 12427400 is about 3525.2517640588. The cubic root of 12427400 is about 231.6292632079.

Adding to 12427400 its reverse (472421), we get a palindrome (12899821).

The spelling of 12427400 in words is "twelve million, four hundred twenty-seven thousand, four hundred".