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730060521 = 31931260899
BaseRepresentation
bin101011100000111…
…101011011101001
31212212201220202120
4223200331123221
52443343414041
6200235421453
724043261221
oct5340753351
91785656676
10730060521
11345111303
121845b4889
13b8335a98
146cd61081
154415e366
hex2b83d6e9

730060521 has 8 divisors (see below), whose sum is σ = 978458400. Its totient is φ = 484184832.

The previous prime is 730060489. The next prime is 730060523. The reversal of 730060521 is 125060037.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 730060521 - 25 = 730060489 is a prime.

It is a super-3 number, since 3×7300605213 (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 730060491 and 730060500.

It is not an unprimeable number, because it can be changed into a prime (730060523) 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 7 ways as a sum of consecutive naturals, for example, 629871 + ... + 631028.

It is an arithmetic number, because the mean of its divisors is an integer number (122307300).

Almost surely, 2730060521 is an apocalyptic number.

It is an amenable number.

730060521 is a deficient number, since it is larger than the sum of its proper divisors (248397879).

730060521 is a wasteful number, since it uses less digits than its factorization.

730060521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261095.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 730060521 is about 27019.6321403531. The cubic root of 730060521 is about 900.4362169329.

The spelling of 730060521 in words is "seven hundred thirty million, sixty thousand, five hundred twenty-one".

Divisors: 1 3 193 579 1260899 3782697 243353507 730060521