28718032 has 40 divisors (see below), whose sum is σ = 67334976. Its totient is φ = 11582976.

The previous prime is 28718029. The next prime is 28718089. The reversal of 28718032 is 23081782.

It is a junction number, because it is equal to n+sod(n) for n = 28717985 and 28718003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5638 + ... + 9445.

Almost surely, 2^28718032 is an apocalyptic number.

It is an amenable number.

28718032 is an abundant number, since it is smaller than the sum of its proper divisors (38616944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28718032 is a wasteful number, since it uses less digits than its factorization.

28718032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15115 (or 15109 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 28718032 is about 5358.9207868749. The cubic root of 28718032 is about 306.2326963984.

The spelling of 28718032 in words is "twenty-eight million, seven hundred eighteen thousand, thirty-two".