28421372108 has 6 divisors (see below), whose sum is σ = 49737401196. Its totient is φ = 14210686052.

The previous prime is 28421372101. The next prime is 28421372171. The reversal of 28421372108 is 80127312482.

It is not an unprimeable number, because it can be changed into a prime (28421372101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3552671510 + ... + 3552671517.

It is an arithmetic number, because the mean of its divisors is an integer number (8289566866).

Almost surely, 2^28421372108 is an apocalyptic number.

It is an amenable number.

28421372108 is a deficient number, since it is larger than the sum of its proper divisors (21316029088).

28421372108 is a wasteful number, since it uses less digits than its factorization.

28421372108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7105343031 (or 7105343029 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The spelling of 28421372108 in words is "twenty-eight billion, four hundred twenty-one million, three hundred seventy-two thousand, one hundred eight".