28146347417 has 4 divisors (see below), whose sum is σ = 28800913680. Its totient is φ = 27491781156.

The previous prime is 28146347413. The next prime is 28146347431. The reversal of 28146347417 is 71474364182.

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 28146347417 - 2² = 28146347413 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28146347413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327283067 + ... + 327283152.

It is an arithmetic number, because the mean of its divisors is an integer number (7200228420).

Almost surely, 2^28146347417 is an apocalyptic number.

It is an amenable number.

28146347417 is a deficient number, since it is larger than the sum of its proper divisors (654566263).

28146347417 is an equidigital number, since it uses as much as digits as its factorization.

28146347417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654566262.

The product of its digits is 903168, while the sum is 47.

The spelling of 28146347417 in words is "twenty-eight billion, one hundred forty-six million, three hundred forty-seven thousand, four hundred seventeen".