28942535 has 8 divisors (see below), whose sum is σ = 34785456. Its totient is φ = 23117760.

The previous prime is 28942531. The next prime is 28942541. The reversal of 28942535 is 53524982.

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

It is not a de Polignac number, because 28942535 - 2² = 28942531 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28942531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 734 + ... + 7643.

It is an arithmetic number, because the mean of its divisors is an integer number (4348182).

Almost surely, 2^28942535 is an apocalyptic number.

28942535 is a deficient number, since it is larger than the sum of its proper divisors (5842921).

28942535 is an equidigital number, since it uses as much as digits as its factorization.

28942535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9073.

The product of its digits is 86400, while the sum is 38.

The square root of 28942535 is about 5379.8266700703. The cubic root of 28942535 is about 307.0286165574.

It can be divided in two parts, 289 and 42535, that added together give a palindrome (42824).

The spelling of 28942535 in words is "twenty-eight million, nine hundred forty-two thousand, five hundred thirty-five".