12278733 has 16 divisors (see below), whose sum is σ = 16773120. Its totient is φ = 7987824.

The previous prime is 12278729. The next prime is 12278737. The reversal of 12278733 is 33787221.

It is an interprime number because it is at equal distance from previous prime (12278729) and next prime (12278737).

It is not a de Polignac number, because 12278733 - 2² = 12278729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12278694 and 12278703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12278737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24160 + ... + 24662.

It is an arithmetic number, because the mean of its divisors is an integer number (1048320).

Almost surely, 2^12278733 is an apocalyptic number.

It is an amenable number.

12278733 is a deficient number, since it is larger than the sum of its proper divisors (4494387).

12278733 is a wasteful number, since it uses less digits than its factorization.

12278733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688.

The product of its digits is 14112, while the sum is 33.

The square root of 12278733 is about 3504.1023101502. The cubic root of 12278733 is about 230.7019074297.

The spelling of 12278733 in words is "twelve million, two hundred seventy-eight thousand, seven hundred thirty-three".