38016021 has 4 divisors (see below), whose sum is σ = 50688032. Its totient is φ = 25344012.

The previous prime is 38016019. The next prime is 38016023. The reversal of 38016021 is 12061083.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12061083 = 3 ⋅4020361.

It is an interprime number because it is at equal distance from previous prime (38016019) and next prime (38016023).

It is not a de Polignac number, because 38016021 - 2¹ = 38016019 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 (38016023) 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, 6336001 + ... + 6336006.

It is an arithmetic number, because the mean of its divisors is an integer number (12672008).

Almost surely, 2^38016021 is an apocalyptic number.

It is an amenable number.

38016021 is a deficient number, since it is larger than the sum of its proper divisors (12672011).

38016021 is a wasteful number, since it uses less digits than its factorization.

38016021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12672010.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 38016021 is about 6165.7133407255. The cubic root of 38016021 is about 336.2447815924.

The spelling of 38016021 in words is "thirty-eight million, sixteen thousand, twenty-one".