12767998 has 4 divisors (see below), whose sum is σ = 19152000. Its totient is φ = 6383998.

The previous prime is 12767987. The next prime is 12768023. The reversal of 12767998 is 89976721.

It is a happy number.

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

It is a Smith number, since the sum of its digits (49) 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, 3191998 + ... + 3192001.

It is an arithmetic number, because the mean of its divisors is an integer number (4788000).

Almost surely, 2^12767998 is an apocalyptic number.

12767998 is a deficient number, since it is larger than the sum of its proper divisors (6384002).

12767998 is an equidigital number, since it uses as much as digits as its factorization.

12767998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6384001.

The product of its digits is 381024, while the sum is 49.

The square root of 12767998 is about 3573.2335496018. The cubic root of 12767998 is about 233.7263096660.

The spelling of 12767998 in words is "twelve million, seven hundred sixty-seven thousand, nine hundred ninety-eight".