28294681468044 has 96 divisors (see below), whose sum is σ = 73595403947520. Its totient is φ = 8408226235392.

The previous prime is 28294681468013. The next prime is 28294681468049. The reversal of 28294681468044 is 44086418649282.

It is not an unprimeable number, because it can be changed into a prime (28294681468049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23906889 + ... + 25062495.

It is an arithmetic number, because the mean of its divisors is an integer number (766618791120).

Almost surely, 2^{28294681468044} 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 28294681468044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36797701973760).

28294681468044 is an abundant number, since it is smaller than the sum of its proper divisors (45300722479476).

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

28294681468044 is a wasteful number, since it uses less digits than its factorization.

28294681468044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161967 (or 1161965 counting only the distinct ones).

The product of its (nonzero) digits is 169869312, while the sum is 66.

The spelling of 28294681468044 in words is "twenty-eight trillion, two hundred ninety-four billion, six hundred eighty-one million, four hundred sixty-eight thousand, forty-four".