8622478212 has 12 divisors (see below), whose sum is σ = 20119115856. Its totient is φ = 2874159400.

The previous prime is 8622478127. The next prime is 8622478213. The reversal of 8622478212 is 2128742268.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (8622478213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359269914 + ... + 359269937.

It is an arithmetic number, because the mean of its divisors is an integer number (1676592988).

Almost surely, 2^8622478212 is an apocalyptic number.

It is an amenable number.

8622478212 is an abundant number, since it is smaller than the sum of its proper divisors (11496637644).

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

8622478212 is a wasteful number, since it uses less digits than its factorization.

8622478212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718539858 (or 718539856 counting only the distinct ones).

The product of its digits is 172032, while the sum is 42.

The square root of 8622478212 is about 92857.3002622842. The cubic root of 8622478212 is about 2050.5830752286.

The spelling of 8622478212 in words is "eight billion, six hundred twenty-two million, four hundred seventy-eight thousand, two hundred twelve".