28013698944 has 192 divisors, whose sum is σ = 100504010880. Its totient is φ = 7276262400.

The previous prime is 28013698913. The next prime is 28013698949. The reversal of 28013698944 is 44989631082.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28013698949) 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, 69202 + ... + 246609.

It is an arithmetic number, because the mean of its divisors is an integer number (523458390).

Almost surely, 2^28013698944 is an apocalyptic number.

28013698944 is a gapful number since it is divisible by the number (24) 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 28013698944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50252005440).

28013698944 is an abundant number, since it is smaller than the sum of its proper divisors (72490311936).

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

28013698944 is a wasteful number, since it uses less digits than its factorization.

28013698944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315849 (or 315834 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 28013698944 in words is "twenty-eight billion, thirteen million, six hundred ninety-eight thousand, nine hundred forty-four".