28212585 has 8 divisors (see below), whose sum is σ = 45140160. Its totient is φ = 15046704.

The previous prime is 28212557. The next prime is 28212617. The reversal of 28212585 is 58521282.

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

It is not a de Polignac number, because 28212585 - 2⁶ = 28212521 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, 940405 + ... + 940434.

It is an arithmetic number, because the mean of its divisors is an integer number (5642520).

Almost surely, 2^28212585 is an apocalyptic number.

It is an amenable number.

28212585 is a deficient number, since it is larger than the sum of its proper divisors (16927575).

28212585 is a wasteful number, since it uses less digits than its factorization.

28212585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1880847.

The product of its digits is 12800, while the sum is 33.

The square root of 28212585 is about 5311.5520330691. The cubic root of 28212585 is about 304.4254524543.

The spelling of 28212585 in words is "twenty-eight million, two hundred twelve thousand, five hundred eighty-five".