28097069 has 16 divisors (see below), whose sum is σ = 37726080. Its totient is φ = 20208960.

The previous prime is 28097059. The next prime is 28097087. The reversal of 28097069 is 96079082.

It is a cyclic number.

It is not a de Polignac number, because 28097069 - 2²⁰ = 27048493 is a prime.

It is a super-2 number, since 2×28097069² = 1578890572781522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28097059) 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, 13034 + ... + 15035.

It is an arithmetic number, because the mean of its divisors is an integer number (2357880).

Almost surely, 2^28097069 is an apocalyptic number.

It is an amenable number.

28097069 is a deficient number, since it is larger than the sum of its proper divisors (9629011).

28097069 is a wasteful number, since it uses less digits than its factorization.

28097069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28100.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 28097069 is about 5300.6668448413. Note that the first 3 decimals coincide. The cubic root of 28097069 is about 304.0093956295.

The spelling of 28097069 in words is "twenty-eight million, ninety-seven thousand, sixty-nine".