730021344 has 192 divisors, whose sum is σ = 2301384960. Its totient is φ = 200171520.

The previous prime is 730021339. The next prime is 730021349. The reversal of 730021344 is 443120037.

730021344 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (730021339) and next prime (730021349).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730021349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 402199 + ... + 404009.

It is an arithmetic number, because the mean of its divisors is an integer number (11986380).

Almost surely, 2^730021344 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 730021344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1150692480).

730021344 is an abundant number, since it is smaller than the sum of its proper divisors (1571363616).

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

730021344 is a wasteful number, since it uses less digits than its factorization.

730021344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1873 (or 1865 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 730021344 is about 27018.9071577664. The cubic root of 730021344 is about 900.4201100396.

The spelling of 730021344 in words is "seven hundred thirty million, twenty-one thousand, three hundred forty-four".