28194672660 has 384 divisors, whose sum is σ = 106417704960. Its totient is φ = 5399654400.

The previous prime is 28194672647. The next prime is 28194672677. The reversal of 28194672660 is 6627649182.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3243520 + ... + 3252200.

It is an arithmetic number, because the mean of its divisors is an integer number (277129440).

Almost surely, 2^28194672660 is an apocalyptic number.

28194672660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28194672660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53208852480).

28194672660 is an abundant number, since it is smaller than the sum of its proper divisors (78223032300).

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

28194672660 is a wasteful number, since it uses less digits than its factorization.

28194672660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8767 (or 8765 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 51.

The spelling of 28194672660 in words is "twenty-eight billion, one hundred ninety-four million, six hundred seventy-two thousand, six hundred sixty".