28927886 has 8 divisors (see below), whose sum is σ = 46729704. Its totient is φ = 13351320.

The previous prime is 28927883. The next prime is 28927901. The reversal of 28927886 is 68872982.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28927883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 556280 + ... + 556331.

It is an arithmetic number, because the mean of its divisors is an integer number (5841213).

Almost surely, 2^28927886 is an apocalyptic number.

28927886 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28927886 is a deficient number, since it is larger than the sum of its proper divisors (17801818).

28927886 is a wasteful number, since it uses less digits than its factorization.

28927886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112626.

The product of its digits is 774144, while the sum is 50.

The square root of 28927886 is about 5378.4650226621. The cubic root of 28927886 is about 306.9768079047.

The spelling of 28927886 in words is "twenty-eight million, nine hundred twenty-seven thousand, eight hundred eighty-six".