28080069 has 8 divisors (see below), whose sum is σ = 38054112. Its totient is φ = 18413040.

The previous prime is 28080061. The next prime is 28080097. The reversal of 28080069 is 96008082.

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

It is not a de Polignac number, because 28080069 - 2³ = 28080061 is a prime.

It is a super-2 number, since 2×28080069² = 1576980550089522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28080061) 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, 76539 + ... + 76904.

It is an arithmetic number, because the mean of its divisors is an integer number (4756764).

Almost surely, 2^28080069 is an apocalyptic number.

It is an amenable number.

28080069 is a deficient number, since it is larger than the sum of its proper divisors (9974043).

28080069 is a wasteful number, since it uses less digits than its factorization.

28080069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153507.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 28080069 is about 5299.0630303857. The cubic root of 28080069 is about 303.9480701060.

The spelling of 28080069 in words is "twenty-eight million, eighty thousand, sixty-nine".