28734886 has 4 divisors (see below), whose sum is σ = 43102332. Its totient is φ = 14367442.

The previous prime is 28734869. The next prime is 28734887. The reversal of 28734886 is 68843782.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28734887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7183720 + ... + 7183723.

It is an arithmetic number, because the mean of its divisors is an integer number (10775583).

Almost surely, 2^28734886 is an apocalyptic number.

28734886 is a deficient number, since it is larger than the sum of its proper divisors (14367446).

28734886 is a wasteful number, since it uses less digits than its factorization.

28734886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14367445.

The product of its digits is 516096, while the sum is 46.

The square root of 28734886 is about 5360.4930743356. The cubic root of 28734886 is about 306.2925918272.

The spelling of 28734886 in words is "twenty-eight million, seven hundred thirty-four thousand, eight hundred eighty-six".