12400252 has 12 divisors (see below), whose sum is σ = 21767200. Its totient is φ = 6181056.

The previous prime is 12400247. The next prime is 12400303. The reversal of 12400252 is 25200421.

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, 3252 + ... + 5947.

Almost surely, 2^12400252 is an apocalyptic number.

It is an amenable number.

12400252 is a deficient number, since it is larger than the sum of its proper divisors (9366948).

12400252 is a wasteful number, since it uses less digits than its factorization.

12400252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9540 (or 9538 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 12400252 is about 3521.3991537456. The cubic root of 12400252 is about 231.4604733894.

Adding to 12400252 its reverse (25200421), we get a palindrome (37600673).

The spelling of 12400252 in words is "twelve million, four hundred thousand, two hundred fifty-two".