28369617 has 8 divisors (see below), whose sum is σ = 40051296. Its totient is φ = 17800512.

The previous prime is 28369597. The next prime is 28369657. The reversal of 28369617 is 71696382.

It is a happy number.

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

It is not a de Polignac number, because 28369617 - 2⁶ = 28369553 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (28369657) 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, 278083 + ... + 278184.

It is an arithmetic number, because the mean of its divisors is an integer number (5006412).

Almost surely, 2^28369617 is an apocalyptic number.

It is an amenable number.

28369617 is a deficient number, since it is larger than the sum of its proper divisors (11681679).

28369617 is a wasteful number, since it uses less digits than its factorization.

28369617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556287.

The product of its digits is 108864, while the sum is 42.

The square root of 28369617 is about 5326.3136407838. The cubic root of 28369617 is about 304.9892211545.

The spelling of 28369617 in words is "twenty-eight million, three hundred sixty-nine thousand, six hundred seventeen".