28141917 has 4 divisors (see below), whose sum is σ = 37522560. Its totient is φ = 18761276.

The previous prime is 28141901. The next prime is 28141921. The reversal of 28141917 is 71914182.

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 28141917 - 2⁴ = 28141901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28141937) 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, 4690317 + ... + 4690322.

It is an arithmetic number, because the mean of its divisors is an integer number (9380640).

Almost surely, 2^28141917 is an apocalyptic number.

It is an amenable number.

28141917 is a deficient number, since it is larger than the sum of its proper divisors (9380643).

28141917 is an equidigital number, since it uses as much as digits as its factorization.

28141917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9380642.

The product of its digits is 4032, while the sum is 33.

The square root of 28141917 is about 5304.8955691889. The cubic root of 28141917 is about 304.1710609569.

The spelling of 28141917 in words is "twenty-eight million, one hundred forty-one thousand, nine hundred seventeen".