8220381404 has 24 divisors (see below), whose sum is σ = 14856851520. Its totient is φ = 3977532416.

The previous prime is 8220381397. The next prime is 8220381413. The reversal of 8220381404 is 4041830228.

It is a super-2 number, since 2×8220381404² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228917 + ... + 262380.

It is an arithmetic number, because the mean of its divisors is an integer number (619035480).

Almost surely, 2^8220381404 is an apocalyptic number.

It is an amenable number.

8220381404 is a deficient number, since it is larger than the sum of its proper divisors (6636470116).

8220381404 is a wasteful number, since it uses less digits than its factorization.

8220381404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491437 (or 491435 counting only the distinct ones).

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

The square root of 8220381404 is about 90666.3190164904. The cubic root of 8220381404 is about 2018.1990126700.

The spelling of 8220381404 in words is "eight billion, two hundred twenty million, three hundred eighty-one thousand, four hundred four".