38838820 has 12 divisors (see below), whose sum is σ = 81561564. Its totient is φ = 15535520.

The previous prime is 38838809. The next prime is 38838823. The reversal of 38838820 is 2883883.

It can be written as a sum of positive squares in 2 ways, for example, as 27373824 + 11464996 = 5232^2 + 3386^2 .

It is not an unprimeable number, because it can be changed into a prime (38838823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 970951 + ... + 970990.

It is an arithmetic number, because the mean of its divisors is an integer number (6796797).

Almost surely, 2^38838820 is an apocalyptic number.

It is an amenable number.

38838820 is an abundant number, since it is smaller than the sum of its proper divisors (42722744).

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

38838820 is a wasteful number, since it uses less digits than its factorization.

38838820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941950 (or 1941948 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 38838820 is about 6232.0799096289. The cubic root of 38838820 is about 338.6533236282.

The spelling of 38838820 in words is "thirty-eight million, eight hundred thirty-eight thousand, eight hundred twenty".