28536242 has 16 divisors (see below), whose sum is σ = 48988032. Its totient is φ = 12212640.

The previous prime is 28536241. The next prime is 28536269. The reversal of 28536242 is 24263582.

It is a junction number, because it is equal to n+sod(n) for n = 28536199 and 28536208.

It is not an unprimeable number, because it can be changed into a prime (28536241) 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, 17723 + ... + 19265.

It is an arithmetic number, because the mean of its divisors is an integer number (3061752).

Almost surely, 2^28536242 is an apocalyptic number.

28536242 is a deficient number, since it is larger than the sum of its proper divisors (20451790).

28536242 is a wasteful number, since it uses less digits than its factorization.

28536242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2873.

The product of its digits is 23040, while the sum is 32.

The square root of 28536242 is about 5341.9324218863. The cubic root of 28536242 is about 305.5851598767.

The spelling of 28536242 in words is "twenty-eight million, five hundred thirty-six thousand, two hundred forty-two".