38213771 has 4 divisors (see below), whose sum is σ = 38406000. Its totient is φ = 38021544.

The previous prime is 38213767. The next prime is 38213779. The reversal of 38213771 is 17731283.

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

It is a cyclic number.

It is not a de Polignac number, because 38213771 - 2² = 38213767 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38213779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95816 + ... + 96213.

It is an arithmetic number, because the mean of its divisors is an integer number (9601500).

Almost surely, 2^38213771 is an apocalyptic number.

38213771 is a deficient number, since it is larger than the sum of its proper divisors (192229).

38213771 is a wasteful number, since it uses less digits than its factorization.

38213771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192228.

The product of its digits is 7056, while the sum is 32.

The square root of 38213771 is about 6181.7288034983. The cubic root of 38213771 is about 336.8267945039.

The spelling of 38213771 in words is "thirty-eight million, two hundred thirteen thousand, seven hundred seventy-one".