28983872 has 14 divisors (see below), whose sum is σ = 57514998. Its totient is φ = 14491904.

The previous prime is 28983821. The next prime is 28983883. The reversal of 28983872 is 27838982.

28983872 is nontrivially palindromic in base 5.

It can be written as a sum of positive squares in only one way, i.e., 19149376 + 9834496 = 4376^2 + 3136^2 .

It is a super-2 number, since 2×28983872² = 1680129672224768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226373 + ... + 226500.

Almost surely, 2^28983872 is an apocalyptic number.

It is an amenable number.

28983872 is a deficient number, since it is larger than the sum of its proper divisors (28531126).

28983872 is an equidigital number, since it uses as much as digits as its factorization.

28983872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452885 (or 452875 counting only the distinct ones).

The product of its digits is 387072, while the sum is 47.

The square root of 28983872 is about 5383.6671516727. The cubic root of 28983872 is about 307.1747176097.

The spelling of 28983872 in words is "twenty-eight million, nine hundred eighty-three thousand, eight hundred seventy-two".