12772387 has 4 divisors (see below), whose sum is σ = 12779536. Its totient is φ = 12765240.

The previous prime is 12772381. The next prime is 12772393. The reversal of 12772387 is 78327721.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (12772381) and next prime (12772393).

It is a cyclic number.

It is not a de Polignac number, because 12772387 - 2⁷ = 12772259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12772381) 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, 1738 + ... + 5344.

It is an arithmetic number, because the mean of its divisors is an integer number (3194884).

Almost surely, 2^12772387 is an apocalyptic number.

12772387 is a deficient number, since it is larger than the sum of its proper divisors (7149).

12772387 is an equidigital number, since it uses as much as digits as its factorization.

12772387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7148.

The product of its digits is 32928, while the sum is 37.

The square root of 12772387 is about 3573.8476464449. The cubic root of 12772387 is about 233.7530877417.

The spelling of 12772387 in words is "twelve million, seven hundred seventy-two thousand, three hundred eighty-seven".