28196017 has 4 divisors (see below), whose sum is σ = 28593216. Its totient is φ = 27798820.

The previous prime is 28195997. The next prime is 28196023. The reversal of 28196017 is 71069182.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28196017 - 2¹¹ = 28193969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28196027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198493 + ... + 198634.

It is an arithmetic number, because the mean of its divisors is an integer number (7148304).

Almost surely, 2^28196017 is an apocalyptic number.

It is an amenable number.

28196017 is a deficient number, since it is larger than the sum of its proper divisors (397199).

28196017 is an equidigital number, since it uses as much as digits as its factorization.

28196017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397198.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 28196017 is about 5309.9921845517. The cubic root of 28196017 is about 304.3658489295.

It can be divided in two parts, 2819 and 6017, that added together give a square (8836 = 94²).

The spelling of 28196017 in words is "twenty-eight million, one hundred ninety-six thousand, seventeen".