28884534 has 32 divisors (see below), whose sum is σ = 66375936. Its totient is φ = 8208480.

The previous prime is 28884497. The next prime is 28884577. The reversal of 28884534 is 43548882.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6529 + ... + 10019.

It is an arithmetic number, because the mean of its divisors is an integer number (2074248).

Almost surely, 2^28884534 is an apocalyptic number.

28884534 is an abundant number, since it is smaller than the sum of its proper divisors (37491402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28884534 is a wasteful number, since it uses less digits than its factorization.

28884534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3700.

The product of its digits is 245760, while the sum is 42.

The square root of 28884534 is about 5374.4333654814. The cubic root of 28884534 is about 306.8233837193.

The spelling of 28884534 in words is "twenty-eight million, eight hundred eighty-four thousand, five hundred thirty-four".