28386532 has 48 divisors (see below), whose sum is σ = 56125440. Its totient is φ = 12483072.

The previous prime is 28386529. The next prime is 28386539. The reversal of 28386532 is 23568382.

It is a junction number, because it is equal to n+sod(n) for n = 28386491 and 28386500.

It is not an unprimeable number, because it can be changed into a prime (28386539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163998 + ... + 164170.

It is an arithmetic number, because the mean of its divisors is an integer number (1169280).

Almost surely, 2^28386532 is an apocalyptic number.

It is an amenable number.

28386532 is a deficient number, since it is larger than the sum of its proper divisors (27738908).

28386532 is a wasteful number, since it uses less digits than its factorization.

28386532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340 (or 338 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The square root of 28386532 is about 5327.9012753616. The cubic root of 28386532 is about 305.0498243426.

The spelling of 28386532 in words is "twenty-eight million, three hundred eighty-six thousand, five hundred thirty-two".