28423876 has 12 divisors (see below), whose sum is σ = 53568172. Its totient is φ = 13118688.

The previous prime is 28423873. The next prime is 28423891. The reversal of 28423876 is 67832482.

It can be written as a sum of positive squares in 2 ways, for example, as 5152900 + 23270976 = 2270^2 + 4824^2 .

It is not an unprimeable number, because it can be changed into a prime (28423873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273255 + ... + 273358.

Almost surely, 2^28423876 is an apocalyptic number.

28423876 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28423876 is a deficient number, since it is larger than the sum of its proper divisors (25144296).

28423876 is a wasteful number, since it uses less digits than its factorization.

28423876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546630 (or 546628 counting only the distinct ones).

The product of its digits is 129024, while the sum is 40.

The square root of 28423876 is about 5331.4046929491. The cubic root of 28423876 is about 305.1835355076.

The spelling of 28423876 in words is "twenty-eight million, four hundred twenty-three thousand, eight hundred seventy-six".