38264821 has 4 divisors (see below), whose sum is σ = 43731232. Its totient is φ = 32798412.

The previous prime is 38264783. The next prime is 38264861. The reversal of 38264821 is 12846283.

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 38264821 - 2¹³ = 38256629 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 (38264861) 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, 2733195 + ... + 2733208.

It is an arithmetic number, because the mean of its divisors is an integer number (10932808).

Almost surely, 2^38264821 is an apocalyptic number.

It is an amenable number.

38264821 is a deficient number, since it is larger than the sum of its proper divisors (5466411).

38264821 is an equidigital number, since it uses as much as digits as its factorization.

38264821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5466410.

The product of its digits is 18432, while the sum is 34.

The square root of 38264821 is about 6185.8565292124. The cubic root of 38264821 is about 336.9767173905.

The spelling of 38264821 in words is "thirty-eight million, two hundred sixty-four thousand, eight hundred twenty-one".