28208097 has 48 divisors (see below), whose sum is σ = 45527040. Its totient is φ = 16765056.

The previous prime is 28208093. The next prime is 28208101. The reversal of 28208097 is 79080282.

It is an interprime number because it is at equal distance from previous prime (28208093) and next prime (28208101).

It is not a de Polignac number, because 28208097 - 2² = 28208093 is a prime.

It is a super-2 number, since 2×28208097² = 1591393472722818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28208093) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 222048 + ... + 222174.

It is an arithmetic number, because the mean of its divisors is an integer number (948480).

Almost surely, 2^28208097 is an apocalyptic number.

It is an amenable number.

28208097 is a deficient number, since it is larger than the sum of its proper divisors (17318943).

28208097 is a wasteful number, since it uses less digits than its factorization.

28208097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 28208097 is about 5311.1295408792. The cubic root of 28208097 is about 304.4093091400.

The spelling of 28208097 in words is "twenty-eight million, two hundred eight thousand, ninety-seven".