9649728000 has 480 divisors, whose sum is σ = 37941089472. Its totient is φ = 2337792000.

The previous prime is 9649727987. The next prime is 9649728001. The reversal of 9649728000 is 8279469.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (480).

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

It is not an unprimeable number, because it can be changed into a prime (9649728001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6335239 + ... + 6336761.

Almost surely, 2^9649728000 is an apocalyptic number.

9649728000 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 9649728000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18970544736).

9649728000 is an abundant number, since it is smaller than the sum of its proper divisors (28291361472).

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

9649728000 is a wasteful number, since it uses less digits than its factorization.

9649728000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573 (or 1544 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 9649728000 is about 98233.0290686386. The cubic root of 9649728000 is about 2128.9805344228.

The spelling of 9649728000 in words is "nine billion, six hundred forty-nine million, seven hundred twenty-eight thousand".