9727228980 has 768 divisors, whose sum is σ = 39945830400. Its totient is φ = 1911029760.

The previous prime is 9727228969. The next prime is 9727229027. The reversal of 9727228980 is 898227279.

9727228980 is a `hidden beast` number, since 97 + 272 + 289 + 8 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 37849012 + ... + 37849268.

It is an arithmetic number, because the mean of its divisors is an integer number (52012800).

Almost surely, 2^9727228980 is an apocalyptic number.

9727228980 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 9727228980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19972915200).

9727228980 is an abundant number, since it is smaller than the sum of its proper divisors (30218601420).

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

9727228980 is a wasteful number, since it uses less digits than its factorization.

9727228980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349 (or 341 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The square root of 9727228980 is about 98626.7153462996. The cubic root of 9727228980 is about 2134.6649197068.

The spelling of 9727228980 in words is "nine billion, seven hundred twenty-seven million, two hundred twenty-eight thousand, nine hundred eighty".