28680072 has 64 divisors (see below), whose sum is σ = 75168000. Its totient is φ = 9106944.

The previous prime is 28680059. The next prime is 28680073. The reversal of 28680072 is 27008682.

It is not an unprimeable number, because it can be changed into a prime (28680073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61713 + ... + 62175.

It is an arithmetic number, because the mean of its divisors is an integer number (1174500).

Almost surely, 2^28680072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28680072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37584000).

28680072 is an abundant number, since it is smaller than the sum of its proper divisors (46487928).

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

28680072 is a wasteful number, since it uses less digits than its factorization.

28680072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590 (or 586 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 28680072 is about 5355.3778578173. The cubic root of 28680072 is about 306.0977089826.

The spelling of 28680072 in words is "twenty-eight million, six hundred eighty thousand, seventy-two".