28774527 has 4 divisors (see below), whose sum is σ = 38366040. Its totient is φ = 19183016.

The previous prime is 28774513. The next prime is 28774561. The reversal of 28774527 is 72547782.

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 28774527 - 2⁴ = 28774511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28774507) 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, 4795752 + ... + 4795757.

It is an arithmetic number, because the mean of its divisors is an integer number (9591510).

Almost surely, 2^28774527 is an apocalyptic number.

28774527 is a deficient number, since it is larger than the sum of its proper divisors (9591513).

28774527 is an equidigital number, since it uses as much as digits as its factorization.

28774527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9591512.

The product of its digits is 219520, while the sum is 42.

The square root of 28774527 is about 5364.1893143326. The cubic root of 28774527 is about 306.4333750034.

The spelling of 28774527 in words is "twenty-eight million, seven hundred seventy-four thousand, five hundred twenty-seven".