28365532 has 48 divisors (see below), whose sum is σ = 57379392. Its totient is φ = 12165120.

The previous prime is 28365529. The next prime is 28365539. The reversal of 28365532 is 23556382.

It is a happy number.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28365539) 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 15 ways as a sum of consecutive naturals, for example, 43932 + ... + 44572.

It is an arithmetic number, because the mean of its divisors is an integer number (1195404).

Almost surely, 2^28365532 is an apocalyptic number.

It is an amenable number.

28365532 is an abundant number, since it is smaller than the sum of its proper divisors (29013860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28365532 is a wasteful number, since it uses less digits than its factorization.

28365532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718 (or 716 counting only the distinct ones).

The product of its digits is 43200, while the sum is 34.

The square root of 28365532 is about 5325.9301535037. The cubic root of 28365532 is about 304.9745817750.

The spelling of 28365532 in words is "twenty-eight million, three hundred sixty-five thousand, five hundred thirty-two".