Search a number
-
+
749191241 = 17281156833
BaseRepresentation
bin101100101001111…
…100000001001001
31221012201212011202
4230221330001021
53013243104431
6202201433545
724365010011
oct5451740111
91835655152
10749191241
11354998517
1218aa9b8b5
13bc2a3636
1471700c41
1545b8c8cb
hex2ca7c049

749191241 has 8 divisors (see below), whose sum is σ = 796089384. Its totient is φ = 702607360.

The previous prime is 749191211. The next prime is 749191271. The reversal of 749191241 is 142191947.

It is an interprime number because it is at equal distance from previous prime (749191211) and next prime (749191271).

It can be written as a sum of positive squares in 4 ways, for example, as 153636025 + 595555216 = 12395^2 + 24404^2 .

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-749191241 is a prime.

It is a super-2 number, since 2×7491912412 = 1122575031182240162, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 749191195 and 749191204.

It is not an unprimeable number, because it can be changed into a prime (749191211) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 73640 + ... + 83193.

It is an arithmetic number, because the mean of its divisors is an integer number (99511173).

Almost surely, 2749191241 is an apocalyptic number.

It is an amenable number.

749191241 is a deficient number, since it is larger than the sum of its proper divisors (46898143).

749191241 is a wasteful number, since it uses less digits than its factorization.

749191241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157131.

The product of its digits is 18144, while the sum is 38.

The square root of 749191241 is about 27371.3580408426. The cubic root of 749191241 is about 908.2335983716.

The spelling of 749191241 in words is "seven hundred forty-nine million, one hundred ninety-one thousand, two hundred forty-one".

Divisors: 1 17 281 4777 156833 2666161 44070073 749191241