28986727 has 16 divisors (see below), whose sum is σ = 36260352. Its totient is φ = 22511520.

The previous prime is 28986721. The next prime is 28986743. The reversal of 28986727 is 72768982.

It is a cyclic number.

It is not a de Polignac number, because 28986727 - 2³ = 28986719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28986721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37113 + ... + 37885.

It is an arithmetic number, because the mean of its divisors is an integer number (2266272).

Almost surely, 2^28986727 is an apocalyptic number.

28986727 is a deficient number, since it is larger than the sum of its proper divisors (7273625).

28986727 is a wasteful number, since it uses less digits than its factorization.

28986727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278.

The product of its digits is 677376, while the sum is 49.

The square root of 28986727 is about 5383.9322989800. The cubic root of 28986727 is about 307.1848031615.

The spelling of 28986727 in words is "twenty-eight million, nine hundred eighty-six thousand, seven hundred twenty-seven".