8356381572 has 48 divisors (see below), whose sum is σ = 24309476352. Its totient is φ = 2170488480.

The previous prime is 8356381543. The next prime is 8356381573. The reversal of 8356381572 is 2751836538.

It is a super-2 number, since 2×8356381572² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8356381573) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4520928 + ... + 4522775.

It is an arithmetic number, because the mean of its divisors is an integer number (506447424).

Almost surely, 2^8356381572 is an apocalyptic number.

It is an amenable number.

8356381572 is an abundant number, since it is smaller than the sum of its proper divisors (15953094780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8356381572 is a wasteful number, since it uses less digits than its factorization.

8356381572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9043728 (or 9043726 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 48.

The square root of 8356381572 is about 91413.2461517476. The cubic root of 8356381572 is about 2029.2680652127.

The spelling of 8356381572 in words is "eight billion, three hundred fifty-six million, three hundred eighty-one thousand, five hundred seventy-two".