721104384 has 480 divisors, whose sum is σ = 2664579456. Its totient is φ = 170311680.

The previous prime is 721104383. The next prime is 721104427. The reversal of 721104384 is 483401127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721104383) 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, 10762719 + ... + 10762785.

Almost surely, 2^721104384 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 721104384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1332289728).

721104384 is an abundant number, since it is smaller than the sum of its proper divisors (1943475072).

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

721104384 is a wasteful number, since it uses less digits than its factorization.

721104384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 721104384 is about 26853.3868255012. The cubic root of 721104384 is about 896.7389736991.

It can be divided in two parts, 7211043 and 84, that added together give a palindrome (7211127).

The spelling of 721104384 in words is "seven hundred twenty-one million, one hundred four thousand, three hundred eighty-four".