96721440 has 96 divisors (see below), whose sum is σ = 317955456. Its totient is φ = 24668160.

The previous prime is 96721439. The next prime is 96721447. The reversal of 96721440 is 4412769.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (96721447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6660 + ... + 15420.

It is an arithmetic number, because the mean of its divisors is an integer number (3312036).

Almost surely, 2^96721440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 96721440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158977728).

96721440 is an abundant number, since it is smaller than the sum of its proper divisors (221234016).

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

96721440 is a wasteful number, since it uses less digits than its factorization.

96721440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8802 (or 8794 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 96721440 is about 9834.7058929080. The cubic root of 96721440 is about 459.0298393842.

The spelling of 96721440 in words is "ninety-six million, seven hundred twenty-one thousand, four hundred forty".