728961530 has 32 divisors (see below), whose sum is σ = 1515620160. Its totient is φ = 249483520.

The previous prime is 728961521. The next prime is 728961539. The reversal of 728961530 is 35169827.

It is an interprime number because it is at equal distance from previous prime (728961521) and next prime (728961539).

It is not an unprimeable number, because it can be changed into a prime (728961539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193040 + ... + 196779.

It is an arithmetic number, because the mean of its divisors is an integer number (47363130).

Almost surely, 2^728961530 is an apocalyptic number.

728961530 is an abundant number, since it is smaller than the sum of its proper divisors (786658630).

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

728961530 is a wasteful number, since it uses less digits than its factorization.

728961530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389854.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 728961530 is about 26999.2875831937. The cubic root of 728961530 is about 899.9841684458.

The spelling of 728961530 in words is "seven hundred twenty-eight million, nine hundred sixty-one thousand, five hundred thirty".