38328621 has 4 divisors (see below), whose sum is σ = 51104832. Its totient is φ = 25552412.

The previous prime is 38328613. The next prime is 38328637. The reversal of 38328621 is 12682383.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 38328621 - 2³ = 38328613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38328601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6388101 + ... + 6388106.

It is an arithmetic number, because the mean of its divisors is an integer number (12776208).

Almost surely, 2^38328621 is an apocalyptic number.

It is an amenable number.

38328621 is a deficient number, since it is larger than the sum of its proper divisors (12776211).

38328621 is a wasteful number, since it uses less digits than its factorization.

38328621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12776210.

The product of its digits is 13824, while the sum is 33.

The square root of 38328621 is about 6191.0113067253. The cubic root of 38328621 is about 337.1638969493.

The spelling of 38328621 in words is "thirty-eight million, three hundred twenty-eight thousand, six hundred twenty-one".