28179716 has 12 divisors (see below), whose sum is σ = 49351680. Its totient is φ = 14079240.

The previous prime is 28179653. The next prime is 28179733. The reversal of 28179716 is 61797182.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9005 + ... + 11723.

It is an arithmetic number, because the mean of its divisors is an integer number (4112640).

Almost surely, 2^28179716 is an apocalyptic number.

It is an amenable number.

28179716 is a deficient number, since it is larger than the sum of its proper divisors (21171964).

28179716 is a wasteful number, since it uses less digits than its factorization.

28179716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5314 (or 5312 counting only the distinct ones).

The product of its digits is 42336, while the sum is 41.

The square root of 28179716 is about 5308.4570262930. The cubic root of 28179716 is about 304.3071831477.

It can be divided in two parts, 281 and 79716, that added together give a palindrome (79997).

The spelling of 28179716 in words is "twenty-eight million, one hundred seventy-nine thousand, seven hundred sixteen".