12254638 has 24 divisors (see below), whose sum is σ = 20492640. Its totient is φ = 5491200.

The previous prime is 12254629. The next prime is 12254663. The reversal of 12254638 is 83645221.

It is a super-2 number, since 2×12254638² = 300352305022088, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18798 + ... + 19438.

It is an arithmetic number, because the mean of its divisors is an integer number (853860).

Almost surely, 2^12254638 is an apocalyptic number.

12254638 is a deficient number, since it is larger than the sum of its proper divisors (8238002).

12254638 is a wasteful number, since it uses less digits than its factorization.

12254638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744 (or 733 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 12254638 is about 3500.6625087260. The cubic root of 12254638 is about 230.5509037260.

Adding to 12254638 its reverse (83645221), we get a palindrome (95899859).

The spelling of 12254638 in words is "twelve million, two hundred fifty-four thousand, six hundred thirty-eight".