28080169 has 16 divisors (see below), whose sum is σ = 31088512. Its totient is φ = 25204608.

The previous prime is 28080163. The next prime is 28080181. The reversal of 28080169 is 96108082.

It is not a de Polignac number, because 28080169 - 2⁵ = 28080137 is a prime.

It is a super-2 number, since 2×28080169² = 1576991782137122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28080163) 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, 89557 + ... + 89869.

It is an arithmetic number, because the mean of its divisors is an integer number (1943032).

Almost surely, 2^28080169 is an apocalyptic number.

It is an amenable number.

28080169 is a deficient number, since it is larger than the sum of its proper divisors (3008343).

28080169 is a wasteful number, since it uses less digits than its factorization.

28080169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 28080169 is about 5299.0724660076. The cubic root of 28080169 is about 303.9484309167.

The spelling of 28080169 in words is "twenty-eight million, eighty thousand, one hundred sixty-nine".