38221971 has 16 divisors (see below), whose sum is σ = 52889760. Its totient is φ = 24523520.

The previous prime is 38221921. The next prime is 38221979. The reversal of 38221971 is 17912283.

It is a cyclic number.

It is not a de Polignac number, because 38221971 - 2⁶ = 38221907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38221979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39631 + ... + 40583.

It is an arithmetic number, because the mean of its divisors is an integer number (3305610).

Almost surely, 2^38221971 is an apocalyptic number.

38221971 is a deficient number, since it is larger than the sum of its proper divisors (14667789).

38221971 is a wasteful number, since it uses less digits than its factorization.

38221971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1446.

The product of its digits is 6048, while the sum is 33.

The square root of 38221971 is about 6182.3920128054. The cubic root of 38221971 is about 336.8508851403.

The spelling of 38221971 in words is "thirty-eight million, two hundred twenty-one thousand, nine hundred seventy-one".