38820238 has 4 divisors (see below), whose sum is σ = 58230360. Its totient is φ = 19410118.

The previous prime is 38820209. The next prime is 38820239. The reversal of 38820238 is 83202883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83202883 = 2903 ⋅28661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38820239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9705058 + ... + 9705061.

It is an arithmetic number, because the mean of its divisors is an integer number (14557590).

Almost surely, 2^38820238 is an apocalyptic number.

38820238 is a deficient number, since it is larger than the sum of its proper divisors (19410122).

38820238 is a wasteful number, since it uses less digits than its factorization.

38820238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19410121.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 38820238 is about 6230.5888967256. The cubic root of 38820238 is about 338.5993067115.

The spelling of 38820238 in words is "thirty-eight million, eight hundred twenty thousand, two hundred thirty-eight".