28311690204 has 108 divisors (see below), whose sum is σ = 84661176600. Its totient is φ = 7951922496.

The previous prime is 28311690181. The next prime is 28311690257. The reversal of 28311690204 is 40209611382.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 31939 + ... + 240090.

Almost surely, 2^28311690204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28311690204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42330588300).

28311690204 is an abundant number, since it is smaller than the sum of its proper divisors (56349486396).

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

28311690204 is a wasteful number, since it uses less digits than its factorization.

28311690204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272112 (or 272100 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 28311690204 in words is "twenty-eight billion, three hundred eleven million, six hundred ninety thousand, two hundred four".