28473985 has 8 divisors (see below), whose sum is σ = 34813800. Its totient is φ = 22349184.

The previous prime is 28473959. The next prime is 28474003. The reversal of 28473985 is 58937482.

It can be written as a sum of positive squares in 4 ways, for example, as 246016 + 28227969 = 496^2 + 5313^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 28473985 - 2⁵ = 28473953 is a prime.

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, 53460 + ... + 53989.

It is an arithmetic number, because the mean of its divisors is an integer number (4351725).

Almost surely, 2^28473985 is an apocalyptic number.

It is an amenable number.

28473985 is a deficient number, since it is larger than the sum of its proper divisors (6339815).

28473985 is a wasteful number, since it uses less digits than its factorization.

28473985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107507.

The product of its digits is 483840, while the sum is 46.

The square root of 28473985 is about 5336.1020417529. The cubic root of 28473985 is about 305.3627682077.

The spelling of 28473985 in words is "twenty-eight million, four hundred seventy-three thousand, nine hundred eighty-five".