730912 has 48 divisors (see below), whose sum is σ = 1778112. Its totient is φ = 288000.

The previous prime is 730909. The next prime is 730913. The reversal of 730912 is 219037.

730912 = T₁₁₈ + T₁₁₉ + ... + T₁₈₁.

It is not an unprimeable number, because it can be changed into a prime (730913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2787 + ... + 3037.

It is an arithmetic number, because the mean of its divisors is an integer number (37044).

2⁷³⁰⁹¹² 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 730912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (889056).

730912 is an abundant number, since it is smaller than the sum of its proper divisors (1047200).

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

730912 is a wasteful number, since it uses less digits than its factorization.

730912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 730912 is about 854.9339155748. The cubic root of 730912 is about 90.0786144384.

Adding to 730912 its reverse (219037), we get a palindrome (949949).

The spelling of 730912 in words is "seven hundred thirty thousand, nine hundred twelve".