12478433 has 4 divisors (see below), whose sum is σ = 13612848. Its totient is φ = 11344020.

The previous prime is 12478409. The next prime is 12478451. The reversal of 12478433 is 33487421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12478433 is a prime.

It is a super-2 number, since 2×12478433² = 311422580270978, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12478433.

It is not an unprimeable number, because it can be changed into a prime (12478483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 567191 + ... + 567212.

It is an arithmetic number, because the mean of its divisors is an integer number (3403212).

Almost surely, 2^12478433 is an apocalyptic number.

It is an amenable number.

12478433 is a deficient number, since it is larger than the sum of its proper divisors (1134415).

12478433 is a wasteful number, since it uses less digits than its factorization.

12478433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134414.

The product of its digits is 16128, while the sum is 32.

The square root of 12478433 is about 3532.4825548048. The cubic root of 12478433 is about 231.9458913152.

The spelling of 12478433 in words is "twelve million, four hundred seventy-eight thousand, four hundred thirty-three".