28527147 has 40 divisors (see below), whose sum is σ = 47097072. Its totient is φ = 17064000.

The previous prime is 28527143. The next prime is 28527209. The reversal of 28527147 is 74172582.

It is not a de Polignac number, because 28527147 - 2² = 28527143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28527143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 89833 + ... + 90149.

Almost surely, 2^28527147 is an apocalyptic number.

28527147 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

28527147 is a deficient number, since it is larger than the sum of its proper divisors (18569925).

28527147 is a wasteful number, since it uses less digits than its factorization.

28527147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 432 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 28527147 is about 5341.0810703452. The cubic root of 28527147 is about 305.5526913132.

It can be divided in two parts, 2852714 and 7, that added together give a square (2852721 = 1689²).

The spelling of 28527147 in words is "twenty-eight million, five hundred twenty-seven thousand, one hundred forty-seven".