8218722132 has 48 divisors (see below), whose sum is σ = 21327425280. Its totient is φ = 2737050624.

The previous prime is 8218722107. The next prime is 8218722173. The reversal of 8218722132 is 2312278128.

It is a super-3 number, since 3×8218722132³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84628 + ... + 153620.

It is an arithmetic number, because the mean of its divisors is an integer number (444321360).

Almost surely, 2^8218722132 is an apocalyptic number.

It is an amenable number.

8218722132 is an abundant number, since it is smaller than the sum of its proper divisors (13108703148).

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

8218722132 is a wasteful number, since it uses less digits than its factorization.

8218722132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70109 (or 70101 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 8218722132 is about 90657.1681225484. The cubic root of 8218722132 is about 2018.0632133567.

The spelling of 8218722132 in words is "eight billion, two hundred eighteen million, seven hundred twenty-two thousand, one hundred thirty-two".