28416985 has 8 divisors (see below), whose sum is σ = 34171200. Its totient is φ = 22686384.

The previous prime is 28416967. The next prime is 28417007. The reversal of 28416985 is 58961482.

It is a happy number.

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 28416985 - 2⁹ = 28416473 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, 3135 + ... + 8164.

It is an arithmetic number, because the mean of its divisors is an integer number (4271400).

Almost surely, 2^28416985 is an apocalyptic number.

It is an amenable number.

28416985 is a deficient number, since it is larger than the sum of its proper divisors (5754215).

28416985 is a wasteful number, since it uses less digits than its factorization.

28416985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11807.

The product of its digits is 138240, while the sum is 43.

The square root of 28416985 is about 5330.7583888224. The cubic root of 28416985 is about 305.1588709179.

The spelling of 28416985 in words is "twenty-eight million, four hundred sixteen thousand, nine hundred eighty-five".