28818097 has 16 divisors (see below), whose sum is σ = 36698112. Its totient is φ = 21975120.

The previous prime is 28818091. The next prime is 28818113. The reversal of 28818097 is 79081882.

It is a cyclic number.

It is not a de Polignac number, because 28818097 - 2³ = 28818089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28818091) 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, 363 + ... + 7600.

It is an arithmetic number, because the mean of its divisors is an integer number (2293632).

Almost surely, 2^28818097 is an apocalyptic number.

It is an amenable number.

28818097 is a deficient number, since it is larger than the sum of its proper divisors (7880015).

28818097 is a wasteful number, since it uses less digits than its factorization.

28818097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8028.

The product of its (nonzero) digits is 64512, while the sum is 43.

The square root of 28818097 is about 5368.2489696362. The cubic root of 28818097 is about 306.5879627634.

The spelling of 28818097 in words is "twenty-eight million, eight hundred eighteen thousand, ninety-seven".