28473686 has 16 divisors (see below), whose sum is σ = 44247168. Its totient is φ = 13728000.

The previous prime is 28473673. The next prime is 28473713. The reversal of 28473686 is 68637482.

It is a super-3 number, since 3×28473686³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21236 + ... + 22536.

It is an arithmetic number, because the mean of its divisors is an integer number (2765448).

Almost surely, 2^28473686 is an apocalyptic number.

28473686 is a deficient number, since it is larger than the sum of its proper divisors (15773482).

28473686 is a wasteful number, since it uses less digits than its factorization.

28473686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1687.

The product of its digits is 387072, while the sum is 44.

The square root of 28473686 is about 5336.0740249738. The cubic root of 28473686 is about 305.3616993514.

The spelling of 28473686 in words is "twenty-eight million, four hundred seventy-three thousand, six hundred eighty-six".