9217426680 has 1152 divisors, whose sum is σ = 41628787200. Its totient is φ = 1724405760.

The previous prime is 9217426627. The next prime is 9217426697. The reversal of 9217426680 is 866247129.

It is a happy number.

9217426680 is a `hidden beast` number, since 9 + 217 + 426 + 6 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 214358739 + ... + 214358781.

It is an arithmetic number, because the mean of its divisors is an integer number (36136100).

Almost surely, 2^9217426680 is an apocalyptic number.

9217426680 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9217426680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20814393600).

9217426680 is an abundant number, since it is smaller than the sum of its proper divisors (32411360520).

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

9217426680 is a wasteful number, since it uses less digits than its factorization.

9217426680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 9217426680 is about 96007.4303374484. The cubic root of 9217426680 is about 2096.7012972656.

The spelling of 9217426680 in words is "nine billion, two hundred seventeen million, four hundred twenty-six thousand, six hundred eighty".