38847820 has 48 divisors (see below), whose sum is σ = 92080800. Its totient is φ = 13637120.

The previous prime is 38847811. The next prime is 38847827. The reversal of 38847820 is 2874883.

It is not an unprimeable number, because it can be changed into a prime (38847827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3336 + ... + 9424.

It is an arithmetic number, because the mean of its divisors is an integer number (1918350).

Almost surely, 2^38847820 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 38847820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46040400).

38847820 is an abundant number, since it is smaller than the sum of its proper divisors (53232980).

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

38847820 is a wasteful number, since it uses less digits than its factorization.

38847820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6138 (or 6136 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 38847820 is about 6232.8019381334. The cubic root of 38847820 is about 338.6794799714.

The spelling of 38847820 in words is "thirty-eight million, eight hundred forty-seven thousand, eight hundred twenty".