28589432 has 8 divisors (see below), whose sum is σ = 53605200. Its totient is φ = 14294712.

The previous prime is 28589417. The next prime is 28589441. The reversal of 28589432 is 23498582.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 28589432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1786832 + ... + 1786847.

It is an arithmetic number, because the mean of its divisors is an integer number (6700650).

Almost surely, 2^28589432 is an apocalyptic number.

It is an amenable number.

28589432 is a deficient number, since it is larger than the sum of its proper divisors (25015768).

28589432 is a wasteful number, since it uses less digits than its factorization.

28589432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3573685 (or 3573681 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The square root of 28589432 is about 5346.9086395786. The cubic root of 28589432 is about 305.7749067279.

The spelling of 28589432 in words is "twenty-eight million, five hundred eighty-nine thousand, four hundred thirty-two".