28689594 has 16 divisors (see below), whose sum is σ = 57485568. Its totient is φ = 9545472.

The previous prime is 28689587. The next prime is 28689607. The reversal of 28689594 is 49598682.

It is a super-3 number, since 3×28689594³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682 + ... + 7605.

It is an arithmetic number, because the mean of its divisors is an integer number (3592848).

Almost surely, 2^28689594 is an apocalyptic number.

28689594 is an abundant number, since it is smaller than the sum of its proper divisors (28795974).

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

28689594 is a wasteful number, since it uses less digits than its factorization.

28689594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8869.

The product of its digits is 1244160, while the sum is 51.

The square root of 28689594 is about 5356.2667969398. The cubic root of 28689594 is about 306.1315808162.

The spelling of 28689594 in words is "twenty-eight million, six hundred eighty-nine thousand, five hundred ninety-four".