28288435 has 48 divisors (see below), whose sum is σ = 42681600. Its totient is φ = 17889984.

The previous prime is 28288433. The next prime is 28288439. The reversal of 28288435 is 53488282.

It is not a de Polignac number, because 28288435 - 2¹ = 28288433 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28288433) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 274594 + ... + 274696.

It is an arithmetic number, because the mean of its divisors is an integer number (889200).

Almost surely, 2^28288435 is an apocalyptic number.

28288435 is a deficient number, since it is larger than the sum of its proper divisors (14393165).

28288435 is a wasteful number, since it uses less digits than its factorization.

28288435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200 (or 193 counting only the distinct ones).

The product of its digits is 122880, while the sum is 40.

The square root of 28288435 is about 5318.6873380563. The cubic root of 28288435 is about 304.6980259436.

The spelling of 28288435 in words is "twenty-eight million, two hundred eighty-eight thousand, four hundred thirty-five".