38047221 has 24 divisors (see below), whose sum is σ = 58758336. Its totient is φ = 23664960.

The previous prime is 38047193. The next prime is 38047231. The reversal of 38047221 is 12274083.

38047221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 38047221 - 2⁵ = 38047189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38047231) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 6246 + ... + 10728.

It is an arithmetic number, because the mean of its divisors is an integer number (2448264).

Almost surely, 2^38047221 is an apocalyptic number.

It is an amenable number.

38047221 is a deficient number, since it is larger than the sum of its proper divisors (20711115).

38047221 is a wasteful number, since it uses less digits than its factorization.

38047221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4553 (or 4550 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 38047221 is about 6168.2429426864. The cubic root of 38047221 is about 336.3367425451.

It can be divided in two parts, 3804 and 7221, that added together give a square (11025 = 105²).

The spelling of 38047221 in words is "thirty-eight million, forty-seven thousand, two hundred twenty-one".