28236801 has 16 divisors (see below), whose sum is σ = 40126464. Its totient is φ = 17620944.

The previous prime is 28236787. The next prime is 28236811. The reversal of 28236801 is 10863282.

It is not a de Polignac number, because 28236801 - 2⁶ = 28236737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28236811) 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, 1111 + ... + 7596.

It is an arithmetic number, because the mean of its divisors is an integer number (2507904).

Almost surely, 2^28236801 is an apocalyptic number.

It is an amenable number.

28236801 is a deficient number, since it is larger than the sum of its proper divisors (11889663).

28236801 is a wasteful number, since it uses less digits than its factorization.

28236801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8780.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 28236801 is about 5313.8311038271. The cubic root of 28236801 is about 304.5125277618.

The spelling of 28236801 in words is "twenty-eight million, two hundred thirty-six thousand, eight hundred one".