8120204438 has 4 divisors (see below), whose sum is σ = 12180306660. Its totient is φ = 4060102218.

The previous prime is 8120204437. The next prime is 8120204453. The reversal of 8120204438 is 8344020218.

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

It is a super-2 number, since 2×8120204438² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8120204431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2030051108 + ... + 2030051111.

It is an arithmetic number, because the mean of its divisors is an integer number (3045076665).

Almost surely, 2^8120204438 is an apocalyptic number.

8120204438 is a deficient number, since it is larger than the sum of its proper divisors (4060102222).

8120204438 is a wasteful number, since it uses less digits than its factorization.

8120204438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4060102221.

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 8120204438 is about 90112.1769684874. The cubic root of 8120204438 is about 2009.9672806403.

The spelling of 8120204438 in words is "eight billion, one hundred twenty million, two hundred four thousand, four hundred thirty-eight".