730728552 has 32 divisors (see below), whose sum is σ = 1865692800. Its totient is φ = 238393344.

The previous prime is 730728499. The next prime is 730728553. The reversal of 730728552 is 255827037.

It is a self number, because there is not a number n which added to its sum of digits gives 730728552.

It is not an unprimeable number, because it can be changed into a prime (730728553) 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, 322777 + ... + 325032.

It is an arithmetic number, because the mean of its divisors is an integer number (58302900).

Almost surely, 2^730728552 is an apocalyptic number.

It is an amenable number.

730728552 is an abundant number, since it is smaller than the sum of its proper divisors (1134964248).

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

730728552 is a wasteful number, since it uses less digits than its factorization.

730728552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647865 (or 647861 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 39.

The square root of 730728552 is about 27031.9912696050. The cubic root of 730728552 is about 900.7107767865.

The spelling of 730728552 in words is "seven hundred thirty million, seven hundred twenty-eight thousand, five hundred fifty-two".