9426272778 has 288 divisors, whose sum is σ = 25006677696. Its totient is φ = 2649314304.

The previous prime is 9426272771. The next prime is 9426272783. The reversal of 9426272778 is 8772726249.

It is a happy number.

9426272778 is a `hidden beast` number, since 9 + 4 + 2 + 627 + 2 + 7 + 7 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (9426272771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 60039876 + ... + 60040032.

It is an arithmetic number, because the mean of its divisors is an integer number (86828742).

Almost surely, 2^9426272778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9426272778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12503338848).

9426272778 is an abundant number, since it is smaller than the sum of its proper divisors (15580404918).

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

9426272778 is a wasteful number, since it uses less digits than its factorization.

9426272778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 235 counting only the distinct ones).

The product of its digits is 4741632, while the sum is 54.

The square root of 9426272778 is about 97088.9941136481. The cubic root of 9426272778 is about 2112.4186887835.

The spelling of 9426272778 in words is "nine billion, four hundred twenty-six million, two hundred seventy-two thousand, seven hundred seventy-eight".