9721426176 has 432 divisors, whose sum is σ = 35914290048. Its totient is φ = 2455142400.

The previous prime is 9721426153. The next prime is 9721426189. The reversal of 9721426176 is 6716241279.

9721426176 is a `hidden beast` number, since 9 + 7 + 21 + 4 + 2 + 617 + 6 = 666.

It is a super-2 number, since 2×9721426176² (a number of 21 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6563356 + ... + 6564836.

Almost surely, 2^9721426176 is an apocalyptic number.

9721426176 is a gapful number since it is divisible by the number (96) 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 9721426176, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17957145024).

9721426176 is an abundant number, since it is smaller than the sum of its proper divisors (26192863872).

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

9721426176 is a wasteful number, since it uses less digits than its factorization.

9721426176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558 (or 1541 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 9721426176 is about 98597.2929445834. The cubic root of 9721426176 is about 2134.2403552822.

The spelling of 9721426176 in words is "nine billion, seven hundred twenty-one million, four hundred twenty-six thousand, one hundred seventy-six".