730643144 has 64 divisors (see below), whose sum is σ = 1754213760. Its totient is φ = 276963840.

The previous prime is 730643141. The next prime is 730643149. The reversal of 730643144 is 441346037.

730643144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 730643144.

It is not an unprimeable number, because it can be changed into a prime (730643141) 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, 6764 + ... + 38820.

It is an arithmetic number, because the mean of its divisors is an integer number (27409590).

Almost surely, 2^730643144 is an apocalyptic number.

730643144 is a gapful number since it is divisible by the number (74) 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 730643144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (877106880).

730643144 is an abundant number, since it is smaller than the sum of its proper divisors (1023570616).

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

730643144 is a wasteful number, since it uses less digits than its factorization.

730643144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32118 (or 32114 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 730643144 is about 27030.4114656067. The cubic root of 730643144 is about 900.6756835437.

The spelling of 730643144 in words is "seven hundred thirty million, six hundred forty-three thousand, one hundred forty-four".