28983647 has 12 divisors (see below), whose sum is σ = 36781416. Its totient is φ = 22584240.

The previous prime is 28983641. The next prime is 28983649. The reversal of 28983647 is 74638982.

It is not a de Polignac number, because 28983647 - 2⁸ = 28983391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28983641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26348 + ... + 27425.

It is an arithmetic number, because the mean of its divisors is an integer number (3065118).

Almost surely, 2^28983647 is an apocalyptic number.

28983647 is a deficient number, since it is larger than the sum of its proper divisors (7797769).

28983647 is a wasteful number, since it uses less digits than its factorization.

28983647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53798 (or 53791 counting only the distinct ones).

The product of its digits is 580608, while the sum is 47.

The square root of 28983647 is about 5383.6462550951. The cubic root of 28983647 is about 307.1739227482.

The spelling of 28983647 in words is "twenty-eight million, nine hundred eighty-three thousand, six hundred forty-seven".