28473118 has 4 divisors (see below), whose sum is σ = 42709680. Its totient is φ = 14236558.

The previous prime is 28473083. The next prime is 28473161. The reversal of 28473118 is 81137482.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81137482 = 2 ⋅40568741.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7118278 + ... + 7118281.

It is an arithmetic number, because the mean of its divisors is an integer number (10677420).

Almost surely, 2^28473118 is an apocalyptic number.

28473118 is a deficient number, since it is larger than the sum of its proper divisors (14236562).

28473118 is a wasteful number, since it uses less digits than its factorization.

28473118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14236561.

The product of its digits is 10752, while the sum is 34.

The square root of 28473118 is about 5336.0208020584. The cubic root of 28473118 is about 305.3596688615.

The spelling of 28473118 in words is "twenty-eight million, four hundred seventy-three thousand, one hundred eighteen".