38220843 has 4 divisors (see below), whose sum is σ = 50961128. Its totient is φ = 25480560.

The previous prime is 38220841. The next prime is 38220857. The reversal of 38220843 is 34802283.

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

It is not a de Polignac number, because 38220843 - 2¹ = 38220841 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38220843.

It is not an unprimeable number, because it can be changed into a prime (38220841) 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, 6370138 + ... + 6370143.

It is an arithmetic number, because the mean of its divisors is an integer number (12740282).

Almost surely, 2^38220843 is an apocalyptic number.

38220843 is a deficient number, since it is larger than the sum of its proper divisors (12740285).

38220843 is a wasteful number, since it uses less digits than its factorization.

38220843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12740284.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 38220843 is about 6182.3007853064. The cubic root of 38220843 is about 336.8475714132.

The spelling of 38220843 in words is "thirty-eight million, two hundred twenty thousand, eight hundred forty-three".