12776422 has 4 divisors (see below), whose sum is σ = 19164636. Its totient is φ = 6388210.

The previous prime is 12776411. The next prime is 12776437. The reversal of 12776422 is 22467721.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3194104 + ... + 3194107.

It is an arithmetic number, because the mean of its divisors is an integer number (4791159).

Almost surely, 2^12776422 is an apocalyptic number.

12776422 is a deficient number, since it is larger than the sum of its proper divisors (6388214).

12776422 is an equidigital number, since it uses as much as digits as its factorization.

12776422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6388213.

The product of its digits is 9408, while the sum is 31.

The square root of 12776422 is about 3574.4121194960. The cubic root of 12776422 is about 233.7777005883. Note that the first 4 decimals are identical.

The spelling of 12776422 in words is "twelve million, seven hundred seventy-six thousand, four hundred twenty-two".