38382021 has 6 divisors (see below), whose sum is σ = 55440710. Its totient is φ = 25588008.

The previous prime is 38382011. The next prime is 38382031. The reversal of 38382021 is 12028383.

It is an interprime number because it is at equal distance from previous prime (38382011) and next prime (38382031).

It can be written as a sum of positive squares in only one way, i.e., 21068100 + 17313921 = 4590^2 + 4161^2 .

It is not a de Polignac number, because 38382021 - 2⁵ = 38381989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38382011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2132326 + ... + 2132343.

Almost surely, 2^38382021 is an apocalyptic number.

It is an amenable number.

38382021 is a deficient number, since it is larger than the sum of its proper divisors (17058689).

38382021 is a wasteful number, since it uses less digits than its factorization.

38382021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4264675 (or 4264672 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 38382021 is about 6195.3225097649. The cubic root of 38382021 is about 337.3204048598.

The spelling of 38382021 in words is "thirty-eight million, three hundred eighty-two thousand, twenty-one".