28270735 has 16 divisors (see below), whose sum is σ = 35251200. Its totient is φ = 21749536.

The previous prime is 28270733. The next prime is 28270757. The reversal of 28270735 is 53707282.

It is a cyclic number.

It is not a de Polignac number, because 28270735 - 2¹ = 28270733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28270735.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28270733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12846 + ... + 14884.

It is an arithmetic number, because the mean of its divisors is an integer number (2203200).

Almost surely, 2^28270735 is an apocalyptic number.

28270735 is a deficient number, since it is larger than the sum of its proper divisors (6980465).

28270735 is a wasteful number, since it uses less digits than its factorization.

28270735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2150.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 28270735 is about 5317.0231332955. The cubic root of 28270735 is about 304.6344630980.

It can be divided in two parts, 282 and 70735, that added together give a palindrome (71017).

The spelling of 28270735 in words is "twenty-eight million, two hundred seventy thousand, seven hundred thirty-five".