28662712 has 32 divisors (see below), whose sum is σ = 58212000. Its totient is φ = 13152384.

The previous prime is 28662709. The next prime is 28662713. The reversal of 28662712 is 21726682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28662713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19789 + ... + 21187.

It is an arithmetic number, because the mean of its divisors is an integer number (1819125).

Almost surely, 2^28662712 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 28662712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29106000).

28662712 is an abundant number, since it is smaller than the sum of its proper divisors (29549288).

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

28662712 is a wasteful number, since it uses less digits than its factorization.

28662712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1615 (or 1611 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 28662712 is about 5353.7568118098. The cubic root of 28662712 is about 306.0359363721.

The spelling of 28662712 in words is "twenty-eight million, six hundred sixty-two thousand, seven hundred twelve".