38704001820 has 96 divisors (see below), whose sum is σ = 118480513536. Its totient is φ = 9362361600.

The previous prime is 38704001773. The next prime is 38704001821. The reversal of 38704001820 is 2810040783.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38704001821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 240657 + ... + 367863.

It is an arithmetic number, because the mean of its divisors is an integer number (1234172016).

Almost surely, 2^38704001820 is an apocalyptic number.

38704001820 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 38704001820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59240256768).

38704001820 is an abundant number, since it is smaller than the sum of its proper divisors (79776511716).

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

38704001820 is a wasteful number, since it uses less digits than its factorization.

38704001820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127691 (or 127689 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The spelling of 38704001820 in words is "thirty-eight billion, seven hundred four million, one thousand, eight hundred twenty".