28198146394 has 32 divisors (see below), whose sum is σ = 47657191104. Its totient is φ = 12403198080.

The previous prime is 28198146323. The next prime is 28198146397. The reversal of 28198146394 is 49364189182.

It is not an unprimeable number, because it can be changed into a prime (28198146397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80524 + ... + 250759.

It is an arithmetic number, because the mean of its divisors is an integer number (1489287222).

Almost surely, 2^28198146394 is an apocalyptic number.

28198146394 is a deficient number, since it is larger than the sum of its proper divisors (19459044710).

28198146394 is a wasteful number, since it uses less digits than its factorization.

28198146394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331422.

The product of its digits is 2985984, while the sum is 55.

The spelling of 28198146394 in words is "twenty-eight billion, one hundred ninety-eight million, one hundred forty-six thousand, three hundred ninety-four".