28985427 has 6 divisors (see below), whose sum is σ = 41867852. Its totient is φ = 19323612.

The previous prime is 28985399. The next prime is 28985441. The reversal of 28985427 is 72458982.

It is not a de Polignac number, because 28985427 - 2¹⁴ = 28969043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28985447) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1610293 + ... + 1610310.

Almost surely, 2^28985427 is an apocalyptic number.

28985427 is a deficient number, since it is larger than the sum of its proper divisors (12882425).

28985427 is a wasteful number, since it uses less digits than its factorization.

28985427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3220609 (or 3220606 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 28985427 is about 5383.8115680250. The cubic root of 28985427 is about 307.1802108733.

The spelling of 28985427 in words is "twenty-eight million, nine hundred eighty-five thousand, four hundred twenty-seven".