28350886 has 4 divisors (see below), whose sum is σ = 42526332. Its totient is φ = 14175442.

The previous prime is 28350877. The next prime is 28350899. The reversal of 28350886 is 68805382.

It is a semiprime because it is the product of two primes.

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, 7087720 + ... + 7087723.

It is an arithmetic number, because the mean of its divisors is an integer number (10631583).

Almost surely, 2^28350886 is an apocalyptic number.

28350886 is a deficient number, since it is larger than the sum of its proper divisors (14175446).

28350886 is a wasteful number, since it uses less digits than its factorization.

28350886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14175445.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 28350886 is about 5324.5550048807. Note that the first 3 decimals coincide. The cubic root of 28350886 is about 304.9220834741.

The spelling of 28350886 in words is "twenty-eight million, three hundred fifty thousand, eight hundred eighty-six".