12402444 has 12 divisors (see below), whose sum is σ = 28939064. Its totient is φ = 4134144.

The previous prime is 12402431. The next prime is 12402457. The reversal of 12402444 is 44420421.

It is an interprime number because it is at equal distance from previous prime (12402431) and next prime (12402457).

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 12402444.

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, 516757 + ... + 516780.

Almost surely, 2^12402444 is an apocalyptic number.

It is an amenable number.

12402444 is an abundant number, since it is smaller than the sum of its proper divisors (16536620).

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

12402444 is a wasteful number, since it uses less digits than its factorization.

12402444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033544 (or 1033542 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 12402444 is about 3521.7103799149. The cubic root of 12402444 is about 231.4741110548.

Adding to 12402444 its reverse (44420421), we get a palindrome (56822865).

The spelling of 12402444 in words is "twelve million, four hundred two thousand, four hundred forty-four".