730398251520 has 960 divisors, whose sum is σ = 3008527441920. Its totient is φ = 160247808000.

The previous prime is 730398251519. The next prime is 730398251567. The reversal of 730398251520 is 25152893037.

730398251520 is a `hidden beast` number, since 7 + 3 + 0 + 39 + 82 + 515 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (960).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 694954995 + ... + 694956045.

It is an arithmetic number, because the mean of its divisors is an integer number (3133882752).

Almost surely, 2^730398251520 is an apocalyptic number.

730398251520 is a gapful number since it is divisible by the number (70) 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 730398251520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1504263720960).

730398251520 is an abundant number, since it is smaller than the sum of its proper divisors (2278129190400).

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

730398251520 is a wasteful number, since it uses less digits than its factorization.

730398251520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257 (or 1238 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 730398251520 in words is "seven hundred thirty billion, three hundred ninety-eight million, two hundred fifty-one thousand, five hundred twenty".