8622815388 has 48 divisors (see below), whose sum is σ = 22175295744. Its totient is φ = 2586032640.

The previous prime is 8622815381. The next prime is 8622815389. The reversal of 8622815388 is 8835182268.

It is a self number, because there is not a number n which added to its sum of digits gives 8622815388.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8622815381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323920 + ... + 349527.

It is an arithmetic number, because the mean of its divisors is an integer number (461985328).

Almost surely, 2^8622815388 is an apocalyptic number.

It is an amenable number.

8622815388 is an abundant number, since it is smaller than the sum of its proper divisors (13552480356).

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

8622815388 is a wasteful number, since it uses less digits than its factorization.

8622815388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673562 (or 673560 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 51.

The square root of 8622815388 is about 92859.1158045348. The cubic root of 8622815388 is about 2050.6098037541.

The spelling of 8622815388 in words is "eight billion, six hundred twenty-two million, eight hundred fifteen thousand, three hundred eighty-eight".