28234815 has 32 divisors (see below), whose sum is σ = 52124160. Its totient is φ = 12783744.

The previous prime is 28234793. The next prime is 28234819. The reversal of 28234815 is 51843282.

It is not a de Polignac number, because 28234815 - 2⁶ = 28234751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28234819) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10212 + ... + 12678.

It is an arithmetic number, because the mean of its divisors is an integer number (1628880).

Almost surely, 2^28234815 is an apocalyptic number.

28234815 is a deficient number, since it is larger than the sum of its proper divisors (23889345).

28234815 is a wasteful number, since it uses less digits than its factorization.

28234815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2591.

The product of its digits is 15360, while the sum is 33.

The square root of 28234815 is about 5313.6442297166. The cubic root of 28234815 is about 304.5053884255.

The spelling of 28234815 in words is "twenty-eight million, two hundred thirty-four thousand, eight hundred fifteen".