8021670328 has 32 divisors (see below), whose sum is σ = 17201460960. Its totient is φ = 3435425280.

The previous prime is 8021670323. The next prime is 8021670331. The reversal of 8021670328 is 8230761208.

It is a super-2 number, since 2×8021670328² (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 (8021670323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30268 + ... + 130228.

It is an arithmetic number, because the mean of its divisors is an integer number (537545655).

Almost surely, 2^8021670328 is an apocalyptic number.

It is an amenable number.

8021670328 is an abundant number, since it is smaller than the sum of its proper divisors (9179790632).

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

8021670328 is a wasteful number, since it uses less digits than its factorization.

8021670328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101407 (or 101403 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 8021670328 is about 89563.7779908820. Note that the first 3 decimals coincide. The cubic root of 8021670328 is about 2001.8042325497.

It can be divided in two parts, 80216 and 70328, that added together give a square (150544 = 388²).

The spelling of 8021670328 in words is "eight billion, twenty-one million, six hundred seventy thousand, three hundred twenty-eight".