28004294106 has 160 divisors (see below), whose sum is σ = 70956103680. Its totient is φ = 8208345600.

The previous prime is 28004294053. The next prime is 28004294107. The reversal of 28004294106 is 60149240082.

It is not an unprimeable number, because it can be changed into a prime (28004294107) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2470191 + ... + 2481501.

It is an arithmetic number, because the mean of its divisors is an integer number (443475648).

Almost surely, 2^28004294106 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28004294106, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35478051840).

28004294106 is an abundant number, since it is smaller than the sum of its proper divisors (42951809574).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28004294106 is a wasteful number, since it uses less digits than its factorization.

28004294106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11402 (or 11393 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 28004294106 in words is "twenty-eight billion, four million, two hundred ninety-four thousand, one hundred six".