38821938 has 16 divisors (see below), whose sum is σ = 77709216. Its totient is φ = 12929760.

The previous prime is 38821933. The next prime is 38821961. The reversal of 38821938 is 83912883.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 38821938.

It is not an unprimeable number, because it can be changed into a prime (38821933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8673 + ... + 12363.

It is an arithmetic number, because the mean of its divisors is an integer number (4856826).

Almost surely, 2^38821938 is an apocalyptic number.

38821938 is an abundant number, since it is smaller than the sum of its proper divisors (38887278).

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

38821938 is a wasteful number, since it uses less digits than its factorization.

38821938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5449.

The product of its digits is 82944, while the sum is 42.

The square root of 38821938 is about 6230.7253189336. The cubic root of 38821938 is about 338.6042492402.

The spelling of 38821938 in words is "thirty-eight million, eight hundred twenty-one thousand, nine hundred thirty-eight".