28198108946 has 8 divisors (see below), whose sum is σ = 48339615360. Its totient is φ = 12084903828.

The previous prime is 28198108919. The next prime is 28198108949. The reversal of 28198108946 is 64980189182.

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

It is a junction number, because it is equal to n+sod(n) for n = 28198108891 and 28198108900.

It is not an unprimeable number, because it can be changed into a prime (28198108949) 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, 1007075306 + ... + 1007075333.

It is an arithmetic number, because the mean of its divisors is an integer number (6042451920).

Almost surely, 2^28198108946 is an apocalyptic number.

28198108946 is a deficient number, since it is larger than the sum of its proper divisors (20141506414).

28198108946 is a wasteful number, since it uses less digits than its factorization.

28198108946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2014150648.

The product of its (nonzero) digits is 1990656, while the sum is 56.

The spelling of 28198108946 in words is "twenty-eight billion, one hundred ninety-eight million, one hundred eight thousand, nine hundred forty-six".