8021216392 has 32 divisors (see below), whose sum is σ = 17206934400. Its totient is φ = 3433941504.

The previous prime is 8021216389. The next prime is 8021216419. The reversal of 8021216392 is 2936121208.

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, 25068 + ... + 129115.

It is an arithmetic number, because the mean of its divisors is an integer number (537716700).

Almost surely, 2^8021216392 is an apocalyptic number.

It is an amenable number.

8021216392 is an abundant number, since it is smaller than the sum of its proper divisors (9185718008).

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

8021216392 is a wasteful number, since it uses less digits than its factorization.

8021216392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155125 (or 155121 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 8021216392 is about 89561.2438055658. The cubic root of 8021216392 is about 2001.7664719957.

The spelling of 8021216392 in words is "eight billion, twenty-one million, two hundred sixteen thousand, three hundred ninety-two".