28861068 has 12 divisors (see below), whose sum is σ = 67342520. Its totient is φ = 9620352.

The previous prime is 28861051. The next prime is 28861103. The reversal of 28861068 is 86016882.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×28861068² = 1665922492201248, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1202533 + ... + 1202556.

Almost surely, 2^28861068 is an apocalyptic number.

It is an amenable number.

28861068 is an abundant number, since it is smaller than the sum of its proper divisors (38481452).

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

28861068 is a wasteful number, since it uses less digits than its factorization.

28861068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2405096 (or 2405094 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 28861068 is about 5372.2498080413. The cubic root of 28861068 is about 306.7402727119.

The spelling of 28861068 in words is "twenty-eight million, eight hundred sixty-one thousand, sixty-eight".