9226178787828 has 96 divisors (see below), whose sum is σ = 23647661856000. Its totient is φ = 2786669254656.

The previous prime is 9226178787823. The next prime is 9226178787851. The reversal of 9226178787828 is 8287878716229.

9226178787828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 9226178787828.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9226178787823) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 169600 + ... + 4298967.

It is an arithmetic number, because the mean of its divisors is an integer number (246329811000).

Almost surely, 2^{9226178787828} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9226178787828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11823830928000).

9226178787828 is an abundant number, since it is smaller than the sum of its proper divisors (14421483068172).

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

9226178787828 is a wasteful number, since it uses less digits than its factorization.

9226178787828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4468969 (or 4468967 counting only the distinct ones).

The product of its digits is 606928896, while the sum is 75.

The spelling of 9226178787828 in words is "nine trillion, two hundred twenty-six billion, one hundred seventy-eight million, seven hundred eighty-seven thousand, eight hundred twenty-eight".