38048821 has 4 divisors (see below), whose sum is σ = 38425644. Its totient is φ = 37672000.

The previous prime is 38048809. The next prime is 38048833. The reversal of 38048821 is 12884083.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (38048809) and next prime (38048833).

It can be written as a sum of positive squares in 2 ways, for example, as 22752900 + 15295921 = 4770^2 + 3911^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38048821 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 (38048891) 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, 188260 + ... + 188461.

It is an arithmetic number, because the mean of its divisors is an integer number (9606411).

Almost surely, 2^38048821 is an apocalyptic number.

It is an amenable number.

38048821 is a deficient number, since it is larger than the sum of its proper divisors (376823).

38048821 is a wasteful number, since it uses less digits than its factorization.

38048821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376822.

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 38048821 is about 6168.3726379005. The cubic root of 38048821 is about 336.3414571360.

The spelling of 38048821 in words is "thirty-eight million, forty-eight thousand, eight hundred twenty-one".