28506842 has 16 divisors (see below), whose sum is σ = 52628352. Its totient is φ = 11277360.

The previous prime is 28506827. The next prime is 28506847. The reversal of 28506842 is 24860582.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (28506847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78134 + ... + 78497.

It is an arithmetic number, because the mean of its divisors is an integer number (3289272).

Almost surely, 2^28506842 is an apocalyptic number.

28506842 is a deficient number, since it is larger than the sum of its proper divisors (24121510).

28506842 is a wasteful number, since it uses less digits than its factorization.

28506842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156653.

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 28506842 is about 5339.1798995726. The cubic root of 28506842 is about 305.4801788628.

The spelling of 28506842 in words is "twenty-eight million, five hundred six thousand, eight hundred forty-two".