28804718 has 4 divisors (see below), whose sum is σ = 43207080. Its totient is φ = 14402358.

The previous prime is 28804709. The next prime is 28804739. The reversal of 28804718 is 81740882.

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: 81740882 = 2 ⋅40870441.

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, 7201178 + ... + 7201181.

It is an arithmetic number, because the mean of its divisors is an integer number (10801770).

Almost surely, 2^28804718 is an apocalyptic number.

28804718 is a deficient number, since it is larger than the sum of its proper divisors (14402362).

28804718 is a wasteful number, since it uses less digits than its factorization.

28804718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14402361.

The product of its (nonzero) digits is 28672, while the sum is 38.

The square root of 28804718 is about 5367.0027016949. The cubic root of 28804718 is about 306.5405102282.

The spelling of 28804718 in words is "twenty-eight million, eight hundred four thousand, seven hundred eighteen".