38221172 has 12 divisors (see below), whose sum is σ = 72967776. Its totient is φ = 17373240.

The previous prime is 38221153. The next prime is 38221181. The reversal of 38221172 is 27112283.

38221172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434288 + ... + 434375.

It is an arithmetic number, because the mean of its divisors is an integer number (6080648).

Almost surely, 2^38221172 is an apocalyptic number.

It is an amenable number.

38221172 is a deficient number, since it is larger than the sum of its proper divisors (34746604).

38221172 is a wasteful number, since it uses less digits than its factorization.

38221172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868678 (or 868676 counting only the distinct ones).

The product of its digits is 1344, while the sum is 26.

The square root of 38221172 is about 6182.3273934660. The cubic root of 38221172 is about 336.8485379237.

Subtracting from 38221172 its reverse (27112283), we obtain a square (11108889 = 3333²).

It can be divided in two parts, 382211 and 72, that added together give a palindrome (382283).

The spelling of 38221172 in words is "thirty-eight million, two hundred twenty-one thousand, one hundred seventy-two".