28774367 has 4 divisors (see below), whose sum is σ = 28826040. Its totient is φ = 28722696.

The previous prime is 28774363. The next prime is 28774373. The reversal of 28774367 is 76347782.

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

It is a cyclic number.

It is not a de Polignac number, because 28774367 - 2² = 28774363 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28774363) 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, 24992 + ... + 26117.

It is an arithmetic number, because the mean of its divisors is an integer number (7206510).

Almost surely, 2^28774367 is an apocalyptic number.

28774367 is a deficient number, since it is larger than the sum of its proper divisors (51673).

28774367 is an equidigital number, since it uses as much as digits as its factorization.

28774367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51672.

The product of its digits is 395136, while the sum is 44.

The square root of 28774367 is about 5364.1744005951. The cubic root of 28774367 is about 306.4328070308.

The spelling of 28774367 in words is "twenty-eight million, seven hundred seventy-four thousand, three hundred sixty-seven".