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730241261 = 53128310739
BaseRepresentation
bin101011100001101…
…001100011101101
31212220002002200122
4223201221203231
52443420210021
6200243334325
724044643161
oct5341514355
91786062618
10730241261
11345225082
121846813a5
13b839a129
146cdaaca1
1544197bab
hex2b8698ed

730241261 has 8 divisors (see below), whose sum is σ = 744668640. Its totient is φ = 715838032.

The previous prime is 730241243. The next prime is 730241297. The reversal of 730241261 is 162142037.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-730241261 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 730241261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730241861) 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, 62630 + ... + 73368.

It is an arithmetic number, because the mean of its divisors is an integer number (93083580).

Almost surely, 2730241261 is an apocalyptic number.

It is an amenable number.

730241261 is a deficient number, since it is larger than the sum of its proper divisors (14427379).

730241261 is a wasteful number, since it uses less digits than its factorization.

730241261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12075.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 730241261 is about 27022.9765384941. The cubic root of 730241261 is about 900.5105173545.

Adding to 730241261 its reverse (162142037), we get a palindrome (892383298).

The spelling of 730241261 in words is "seven hundred thirty million, two hundred forty-one thousand, two hundred sixty-one".

Divisors: 1 53 1283 10739 67999 569167 13778137 730241261