730530731520 has 800 divisors, whose sum is σ = 2773709658720. Its totient is φ = 183441162240.

The previous prime is 730530731429. The next prime is 730530731573. The reversal of 730530731520 is 25137035037.

730530731520 is a `hidden beast` number, since 7 + 3 + 0 + 530 + 73 + 1 + 52 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 246549559 + ... + 246552521.

Almost surely, 2^730530731520 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 730530731520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1386854829360).

730530731520 is an abundant number, since it is smaller than the sum of its proper divisors (2043178927200).

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

730530731520 is a wasteful number, since it uses less digits than its factorization.

730530731520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3068 (or 3043 counting only the distinct ones).

The product of its (nonzero) digits is 66150, while the sum is 36.

Adding to 730530731520 its reverse (25137035037), we get a palindrome (755667766557).

The spelling of 730530731520 in words is "seven hundred thirty billion, five hundred thirty million, seven hundred thirty-one thousand, five hundred twenty".