28846478 has 4 divisors (see below), whose sum is σ = 43269720. Its totient is φ = 14423238.

The previous prime is 28846463. The next prime is 28846481. The reversal of 28846478 is 87464882.

It is a happy number.

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, 7211618 + ... + 7211621.

It is an arithmetic number, because the mean of its divisors is an integer number (10817430).

Almost surely, 2^28846478 is an apocalyptic number.

28846478 is a deficient number, since it is larger than the sum of its proper divisors (14423242).

28846478 is a wasteful number, since it uses less digits than its factorization.

28846478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14423241.

The product of its digits is 688128, while the sum is 47.

The square root of 28846478 is about 5370.8917322918. The cubic root of 28846478 is about 306.6885756769.

The spelling of 28846478 in words is "twenty-eight million, eight hundred forty-six thousand, four hundred seventy-eight".