38847920 has 80 divisors (see below), whose sum is σ = 96636672. Its totient is φ = 14488320.

The previous prime is 38847889. The next prime is 38847937. The reversal of 38847920 is 2974883.

It is a tau number, because it is divible by the number of its divisors (80).

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, 78875 + ... + 79365.

Almost surely, 2^38847920 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 38847920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48318336).

38847920 is an abundant number, since it is smaller than the sum of its proper divisors (57788752).

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

38847920 is a wasteful number, since it uses less digits than its factorization.

38847920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 38847920 is about 6232.8099602025. The cubic root of 38847920 is about 338.6797705747.

The spelling of 38847920 in words is "thirty-eight million, eight hundred forty-seven thousand, nine hundred twenty".