28585071 has 12 divisors (see below), whose sum is σ = 42168672. Its totient is φ = 18650976.

The previous prime is 28585061. The next prime is 28585079. The reversal of 28585071 is 17058582.

28585071 is a `hidden beast` number, since 2 + 8 + 585 + 0 + 71 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-28585071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28585079) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33366 + ... + 34211.

It is an arithmetic number, because the mean of its divisors is an integer number (3514056).

Almost surely, 2^28585071 is an apocalyptic number.

28585071 is a deficient number, since it is larger than the sum of its proper divisors (13583601).

28585071 is a wasteful number, since it uses less digits than its factorization.

28585071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67630 (or 67627 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The square root of 28585071 is about 5346.5008182923. The cubic root of 28585071 is about 305.7593584165.

The spelling of 28585071 in words is "twenty-eight million, five hundred eighty-five thousand, seventy-one".