28285611 has 8 divisors (see below), whose sum is σ = 37788624. Its totient is φ = 18819840.

The previous prime is 28285601. The next prime is 28285657. The reversal of 28285611 is 11658282.

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

It is not a de Polignac number, because 28285611 - 2⁷ = 28285483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28285601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7486 + ... + 10611.

It is an arithmetic number, because the mean of its divisors is an integer number (4723578).

Almost surely, 2^28285611 is an apocalyptic number.

28285611 is a deficient number, since it is larger than the sum of its proper divisors (9503013).

28285611 is a wasteful number, since it uses less digits than its factorization.

28285611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18621.

The product of its digits is 7680, while the sum is 33.

The square root of 28285611 is about 5318.4218523919. The cubic root of 28285611 is about 304.6878863953.

The spelling of 28285611 in words is "twenty-eight million, two hundred eighty-five thousand, six hundred eleven".