13898421888 has 256 divisors, whose sum is σ = 41726845440. Its totient is φ = 4069785600.

The previous prime is 13898421877. The next prime is 13898421913. The reversal of 13898421888 is 88812489831.

It is a super-2 number, since 2×13898421888² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8680288 + ... + 8681888.

It is an arithmetic number, because the mean of its divisors is an integer number (162995490).

Almost surely, 2^13898421888 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 13898421888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20863422720).

13898421888 is an abundant number, since it is smaller than the sum of its proper divisors (27828423552).

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

13898421888 is a wasteful number, since it uses less digits than its factorization.

13898421888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715 (or 1703 counting only the distinct ones).

The product of its digits is 7077888, while the sum is 60.

The spelling of 13898421888 in words is "thirteen billion, eight hundred ninety-eight million, four hundred twenty-one thousand, eight hundred eighty-eight".