28418986 has 24 divisors (see below), whose sum is σ = 44660160. Its totient is φ = 13559520.

The previous prime is 28418969. The next prime is 28418989. The reversal of 28418986 is 68981482.

It is not an unprimeable number, because it can be changed into a prime (28418989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 265545 + ... + 265651.

It is an arithmetic number, because the mean of its divisors is an integer number (1860840).

Almost surely, 2^28418986 is an apocalyptic number.

28418986 is a deficient number, since it is larger than the sum of its proper divisors (16241174).

28418986 is a wasteful number, since it uses less digits than its factorization.

28418986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270 (or 229 counting only the distinct ones).

The product of its digits is 221184, while the sum is 46.

The square root of 28418986 is about 5330.9460698829. The cubic root of 28418986 is about 305.1660334015.

The spelling of 28418986 in words is "twenty-eight million, four hundred eighteen thousand, nine hundred eighty-six".