28195867 has 16 divisors (see below), whose sum is σ = 34272000. Its totient is φ = 22658400.

The previous prime is 28195819. The next prime is 28195879. The reversal of 28195867 is 76859182.

It is a cyclic number.

It is not a de Polignac number, because 28195867 - 2¹⁵ = 28163099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28195807) 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, 12384 + ... + 14482.

It is an arithmetic number, because the mean of its divisors is an integer number (2142000).

Almost surely, 2^28195867 is an apocalyptic number.

28195867 is a deficient number, since it is larger than the sum of its proper divisors (6076133).

28195867 is a wasteful number, since it uses less digits than its factorization.

28195867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2226.

The product of its digits is 241920, while the sum is 46.

The square root of 28195867 is about 5309.9780602183. The cubic root of 28195867 is about 304.3653091965.

The spelling of 28195867 in words is "twenty-eight million, one hundred ninety-five thousand, eight hundred sixty-seven".