28358694 has 128 divisors (see below), whose sum is σ = 80640000. Its totient is φ = 7185024.

The previous prime is 28358689. The next prime is 28358731. The reversal of 28358694 is 49685382.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 142407 + ... + 142605.

It is an arithmetic number, because the mean of its divisors is an integer number (630000).

Almost surely, 2^28358694 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28358694, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40320000).

28358694 is an abundant number, since it is smaller than the sum of its proper divisors (52281306).

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

28358694 is a wasteful number, since it uses less digits than its factorization.

28358694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 253 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 28358694 is about 5325.2881612172. The cubic root of 28358694 is about 304.9500733471.

The spelling of 28358694 in words is "twenty-eight million, three hundred fifty-eight thousand, six hundred ninety-four".