38728497280 has 256 divisors, whose sum is σ = 103202294400. Its totient is φ = 13779763200.

The previous prime is 38728497271. The next prime is 38728497341. The reversal of 38728497280 is 8279482783.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91991470 + ... + 91991890.

Almost surely, 2^38728497280 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 38728497280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51601147200).

38728497280 is an abundant number, since it is smaller than the sum of its proper divisors (64473797120).

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

38728497280 is a wasteful number, since it uses less digits than its factorization.

38728497280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703 (or 691 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 58.

The spelling of 38728497280 in words is "thirty-eight billion, seven hundred twenty-eight million, four hundred ninety-seven thousand, two hundred eighty".