28195969 has 8 divisors (see below), whose sum is σ = 29025920. Its totient is φ = 27378000.

The previous prime is 28195963. The next prime is 28195997. The reversal of 28195969 is 96959182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28195969 - 2⁹ = 28195457 is a prime.

It is a super-2 number, since 2×28195969² = 1590025335697922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28195963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1894 + ... + 7744.

It is an arithmetic number, because the mean of its divisors is an integer number (3628240).

Almost surely, 2^28195969 is an apocalyptic number.

It is an amenable number.

28195969 is a deficient number, since it is larger than the sum of its proper divisors (829951).

28195969 is an equidigital number, since it uses as much as digits as its factorization.

28195969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5991.

The product of its digits is 349920, while the sum is 49.

The square root of 28195969 is about 5309.9876647691. The cubic root of 28195969 is about 304.3656762151.

The spelling of 28195969 in words is "twenty-eight million, one hundred ninety-five thousand, nine hundred sixty-nine".