28369089 has 48 divisors (see below), whose sum is σ = 50178240. Its totient is φ = 15785280.

The previous prime is 28369079. The next prime is 28369091. The reversal of 28369089 is 98096382.

It is not a de Polignac number, because 28369089 - 2⁵ = 28369057 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28369049) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 53982 + ... + 54504.

It is an arithmetic number, because the mean of its divisors is an integer number (1045380).

Almost surely, 2^28369089 is an apocalyptic number.

It is an amenable number.

28369089 is a deficient number, since it is larger than the sum of its proper divisors (21809151).

28369089 is a wasteful number, since it uses less digits than its factorization.

28369089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587 (or 574 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 28369089 is about 5326.2640753158. The cubic root of 28369089 is about 304.9873290445.

The spelling of 28369089 in words is "twenty-eight million, three hundred sixty-nine thousand, eighty-nine".