38398889280 has 112 divisors (see below), whose sum is σ = 122724330624. Its totient is φ = 10171852800.

The previous prime is 38398889261. The next prime is 38398889311. The reversal of 38398889280 is 8298889383.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12514 + ... + 277406.

It is an arithmetic number, because the mean of its divisors is an integer number (1095752952).

Almost surely, 2^38398889280 is an apocalyptic number.

38398889280 is a gapful number since it is divisible by the number (30) 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 38398889280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61362165312).

38398889280 is an abundant number, since it is smaller than the sum of its proper divisors (84325441344).

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

38398889280 is a wasteful number, since it uses less digits than its factorization.

38398889280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265064 (or 265054 counting only the distinct ones).

The product of its (nonzero) digits is 47775744, while the sum is 66.

The spelling of 38398889280 in words is "thirty-eight billion, three hundred ninety-eight million, eight hundred eighty-nine thousand, two hundred eighty".