38305221 has 8 divisors (see below), whose sum is σ = 51112800. Its totient is φ = 25517232.

The previous prime is 38305187. The next prime is 38305231. The reversal of 38305221 is 12250383.

38305221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 38305221 - 2⁷ = 38305093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38305191 and 38305200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38305231) 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 7 ways as a sum of consecutive naturals, for example, 526 + ... + 8768.

It is an arithmetic number, because the mean of its divisors is an integer number (6389100).

Almost surely, 2^38305221 is an apocalyptic number.

It is an amenable number.

38305221 is a deficient number, since it is larger than the sum of its proper divisors (12807579).

38305221 is a wasteful number, since it uses less digits than its factorization.

38305221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9795.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 38305221 is about 6189.1211815572. The cubic root of 38305221 is about 337.0952690233.

The spelling of 38305221 in words is "thirty-eight million, three hundred five thousand, two hundred twenty-one".