28855982 has 4 divisors (see below), whose sum is σ = 43283976. Its totient is φ = 14427990.

The previous prime is 28855963. The next prime is 28855991. The reversal of 28855982 is 28955882.

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: 28955882 = 2 ⋅14477941.

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, 7213994 + ... + 7213997.

It is an arithmetic number, because the mean of its divisors is an integer number (10820994).

Almost surely, 2^28855982 is an apocalyptic number.

28855982 is a deficient number, since it is larger than the sum of its proper divisors (14427994).

28855982 is a wasteful number, since it uses less digits than its factorization.

28855982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14427993.

The product of its digits is 460800, while the sum is 47.

The square root of 28855982 is about 5371.7764287059. The cubic root of 28855982 is about 306.7222533662.

The spelling of 28855982 in words is "twenty-eight million, eight hundred fifty-five thousand, nine hundred eighty-two".