28672197 has 16 divisors (see below), whose sum is σ = 40355520. Its totient is φ = 18057600.

The previous prime is 28672177. The next prime is 28672199. The reversal of 28672197 is 79127682.

It is not a de Polignac number, because 28672197 - 2⁷ = 28672069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28672199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37297 + ... + 38057.

It is an arithmetic number, because the mean of its divisors is an integer number (2522220).

Almost surely, 2^28672197 is an apocalyptic number.

It is an amenable number.

28672197 is a deficient number, since it is larger than the sum of its proper divisors (11683323).

28672197 is a wasteful number, since it uses less digits than its factorization.

28672197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444.

The product of its digits is 84672, while the sum is 42.

The square root of 28672197 is about 5354.6425651018. The cubic root of 28672197 is about 306.0696902231.

The spelling of 28672197 in words is "twenty-eight million, six hundred seventy-two thousand, one hundred ninety-seven".