38213405 has 4 divisors (see below), whose sum is σ = 45856092. Its totient is φ = 30570720.

The previous prime is 38213377. The next prime is 38213423. The reversal of 38213405 is 50431283.

38213405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 26234884 + 11978521 = 5122^2 + 3461^2 .

It is not a de Polignac number, because 38213405 - 2¹⁴ = 38197021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3821336 + ... + 3821345.

It is an arithmetic number, because the mean of its divisors is an integer number (11464023).

Almost surely, 2^38213405 is an apocalyptic number.

It is an amenable number.

38213405 is a deficient number, since it is larger than the sum of its proper divisors (7642687).

38213405 is an equidigital number, since it uses as much as digits as its factorization.

38213405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7642686.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 38213405 is about 6181.6992000582. The cubic root of 38213405 is about 336.8257191586.

Adding to 38213405 its reverse (50431283), we get a palindrome (88644688).

The spelling of 38213405 in words is "thirty-eight million, two hundred thirteen thousand, four hundred five".