28601589 has 8 divisors (see below), whose sum is σ = 38364480. Its totient is φ = 18953216.

The previous prime is 28601567. The next prime is 28601603. The reversal of 28601589 is 98510682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28601589 - 2⁵ = 28601557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28601539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28044 + ... + 29045.

It is an arithmetic number, because the mean of its divisors is an integer number (4795560).

Almost surely, 2^28601589 is an apocalyptic number.

It is an amenable number.

28601589 is a deficient number, since it is larger than the sum of its proper divisors (9762891).

28601589 is a wasteful number, since it uses less digits than its factorization.

28601589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57259.

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 28601589 is about 5348.0453438616. The cubic root of 28601589 is about 305.8182418405.

The spelling of 28601589 in words is "twenty-eight million, six hundred one thousand, five hundred eighty-nine".