28182986 has 16 divisors (see below), whose sum is σ = 46497024. Its totient is φ = 12730224.

The previous prime is 28182971. The next prime is 28182989. The reversal of 28182986 is 68928182.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28182989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10310 + ... + 12753.

It is an arithmetic number, because the mean of its divisors is an integer number (2906064).

Almost surely, 2^28182986 is an apocalyptic number.

28182986 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28182986 is a deficient number, since it is larger than the sum of its proper divisors (18314038).

28182986 is a wasteful number, since it uses less digits than its factorization.

28182986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23125.

The product of its digits is 110592, while the sum is 44.

The square root of 28182986 is about 5308.7650164610. The cubic root of 28182986 is about 304.3189533870.

The spelling of 28182986 in words is "twenty-eight million, one hundred eighty-two thousand, nine hundred eighty-six".