28862985 has 8 divisors (see below), whose sum is σ = 46180800. Its totient is φ = 15393584.

The previous prime is 28862971. The next prime is 28862987. The reversal of 28862985 is 58926882.

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 28862985 - 2⁷ = 28862857 is a prime.

It is a super-2 number, since 2×28862985² = 1666143806220450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28862987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 962085 + ... + 962114.

It is an arithmetic number, because the mean of its divisors is an integer number (5772600).

Almost surely, 2^28862985 is an apocalyptic number.

It is an amenable number.

28862985 is a deficient number, since it is larger than the sum of its proper divisors (17317815).

28862985 is a wasteful number, since it uses less digits than its factorization.

28862985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1924207.

The product of its digits is 552960, while the sum is 48.

The square root of 28862985 is about 5372.4282219495. The cubic root of 28862985 is about 306.7470639607.

The spelling of 28862985 in words is "twenty-eight million, eight hundred sixty-two thousand, nine hundred eighty-five".