28580712 has 64 divisors (see below), whose sum is σ = 75816000. Its totient is φ = 8953344.

The previous prime is 28580711. The next prime is 28580719. The reversal of 28580712 is 21708582.

It is not an unprimeable number, because it can be changed into a prime (28580711) 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, 106114 + ... + 106382.

It is an arithmetic number, because the mean of its divisors is an integer number (1184625).

Almost surely, 2^28580712 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 28580712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37908000).

28580712 is an abundant number, since it is smaller than the sum of its proper divisors (47235288).

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

28580712 is a wasteful number, since it uses less digits than its factorization.

28580712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530 (or 526 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 28580712 is about 5346.0931529482. The cubic root of 28580712 is about 305.7438156553.

It can be divided in two parts, 28580 and 712, that added together give a palindrome (29292).

The spelling of 28580712 in words is "twenty-eight million, five hundred eighty thousand, seven hundred twelve".