28367419680 has 144 divisors (see below), whose sum is σ = 97239018240. Its totient is φ = 7530637824.

The previous prime is 28367419669. The next prime is 28367419681. The reversal of 28367419680 is 8691476382.

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (28367419681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 276951 + ... + 365289.

It is an arithmetic number, because the mean of its divisors is an integer number (675270960).

Almost surely, 2^28367419680 is an apocalyptic number.

28367419680 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 28367419680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48619509120).

28367419680 is an abundant number, since it is smaller than the sum of its proper divisors (68871598560).

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

28367419680 is a wasteful number, since it uses less digits than its factorization.

28367419680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88583 (or 88572 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 28367419680 in words is "twenty-eight billion, three hundred sixty-seven million, four hundred nineteen thousand, six hundred eighty".