28872854 has 4 divisors (see below), whose sum is σ = 43309284. Its totient is φ = 14436426.

The previous prime is 28872847. The next prime is 28872869. The reversal of 28872854 is 45827882.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45827882 = 2 ⋅22913941.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7218212 + ... + 7218215.

It is an arithmetic number, because the mean of its divisors is an integer number (10827321).

Almost surely, 2^28872854 is an apocalyptic number.

28872854 is a deficient number, since it is larger than the sum of its proper divisors (14436430).

28872854 is a wasteful number, since it uses less digits than its factorization.

28872854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14436429.

The product of its digits is 286720, while the sum is 44.

The square root of 28872854 is about 5373.3466294294. The cubic root of 28872854 is about 306.7820215578.

The spelling of 28872854 in words is "twenty-eight million, eight hundred seventy-two thousand, eight hundred fifty-four".