28527983 has 4 divisors (see below), whose sum is σ = 31121448. Its totient is φ = 25934520.

The previous prime is 28527959. The next prime is 28528007. The reversal of 28527983 is 38972582.

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

It is an interprime number because it is at equal distance from previous prime (28527959) and next prime (28528007).

It is a cyclic number.

It is not a de Polignac number, because 28527983 - 2²⁰ = 27479407 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 (28527913) 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, 1296716 + ... + 1296737.

It is an arithmetic number, because the mean of its divisors is an integer number (7780362).

Almost surely, 2^28527983 is an apocalyptic number.

28527983 is a deficient number, since it is larger than the sum of its proper divisors (2593465).

28527983 is a wasteful number, since it uses less digits than its factorization.

28527983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2593464.

The product of its digits is 241920, while the sum is 44.

The square root of 28527983 is about 5341.1593310816. The cubic root of 28527983 is about 305.5556760673. Note that the first 3 decimals are identical.

The spelling of 28527983 in words is "twenty-eight million, five hundred twenty-seven thousand, nine hundred eighty-three".