28081068 has 48 divisors (see below), whose sum is σ = 69382656. Its totient is φ = 8821120.

The previous prime is 28081063. The next prime is 28081073. The reversal of 28081068 is 86018082.

It is an interprime number because it is at equal distance from previous prime (28081063) and next prime (28081073).

It is not an unprimeable number, because it can be changed into a prime (28081063) 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, 18880 + ... + 20312.

It is an arithmetic number, because the mean of its divisors is an integer number (1445472).

Almost surely, 2^28081068 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 28081068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34691328).

28081068 is an abundant number, since it is smaller than the sum of its proper divisors (41301588).

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

28081068 is a wasteful number, since it uses less digits than its factorization.

28081068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534 (or 1532 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 28081068 is about 5299.1572914946. The cubic root of 28081068 is about 303.9516745667.

The spelling of 28081068 in words is "twenty-eight million, eighty-one thousand, sixty-eight".