38138242 has 16 divisors (see below), whose sum is σ = 60716952. Its totient is φ = 17904640.

The previous prime is 38138239. The next prime is 38138257. The reversal of 38138242 is 24283183.

It can be written as a sum of positive squares in 4 ways, for example, as 25613721 + 12524521 = 5061^2 + 3539^2 .

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 16638 + ... + 18790.

Almost surely, 2^38138242 is an apocalyptic number.

38138242 is a deficient number, since it is larger than the sum of its proper divisors (22578710).

38138242 is a wasteful number, since it uses less digits than its factorization.

38138242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2693.

The product of its digits is 9216, while the sum is 31.

The square root of 38138242 is about 6175.6167303355. The cubic root of 38138242 is about 336.6047369450.

The spelling of 38138242 in words is "thirty-eight million, one hundred thirty-eight thousand, two hundred forty-two".