38329221 has 24 divisors (see below), whose sum is σ = 59908800. Its totient is φ = 21788928.

The previous prime is 38329217. The next prime is 38329223. The reversal of 38329221 is 12292383.

It is a happy number.

It is not a de Polignac number, because 38329221 - 2² = 38329217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38329223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 198501 + ... + 198693.

It is an arithmetic number, because the mean of its divisors is an integer number (2496200).

Almost surely, 2^38329221 is an apocalyptic number.

It is an amenable number.

38329221 is a deficient number, since it is larger than the sum of its proper divisors (21579579).

38329221 is an frugal number, since it uses more digits than its factorization.

38329221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410 (or 203 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 38329221 is about 6191.0597638853. The cubic root of 38329221 is about 337.1656562724.

The spelling of 38329221 in words is "thirty-eight million, three hundred twenty-nine thousand, two hundred twenty-one".