730613538 has 54 divisors (see below), whose sum is σ = 1660809969. Its totient is φ = 232108272.

The previous prime is 730613503. The next prime is 730613551. The reversal of 730613538 is 835316037.

730613538 is a `hidden beast` number, since 7 + 3 + 0 + 613 + 5 + 38 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 641254329 + 89359209 = 25323^2 + 9453^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=19113.

It is a super-2 number, since 2×730613538² = 1067592283817754888, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2637456 + ... + 2637732.

Almost surely, 2^730613538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 730613538

730613538 is an abundant number, since it is smaller than the sum of its proper divisors (930196431).

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

730613538 is a wasteful number, since it uses less digits than its factorization.

730613538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 730613538 is about 27029.8638176370. The cubic root of 730613538 is about 900.6635181135.

The spelling of 730613538 in words is "seven hundred thirty million, six hundred thirteen thousand, five hundred thirty-eight".