28886081 has 8 divisors (see below), whose sum is σ = 33053760. Its totient is φ = 24728688.

The previous prime is 28886071. The next prime is 28886083. The reversal of 28886081 is 18068882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28886081 is a prime.

It is a super-2 number, since 2×28886081² = 1668811351077122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28886083) 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, 4910 + ... + 9048.

It is an arithmetic number, because the mean of its divisors is an integer number (4131720).

Almost surely, 2^28886081 is an apocalyptic number.

It is an amenable number.

28886081 is a deficient number, since it is larger than the sum of its proper divisors (4167679).

28886081 is an equidigital number, since it uses as much as digits as its factorization.

28886081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5143.

The product of its (nonzero) digits is 49152, while the sum is 41.

The square root of 28886081 is about 5374.5772857035. The cubic root of 28886081 is about 306.8288612446.

The spelling of 28886081 in words is "twenty-eight million, eight hundred eighty-six thousand, eighty-one".