Search a number
-
+
813050841 = 3271016947
BaseRepresentation
bin110000011101100…
…010101111011001
32002122220021002010
4300131202233121
53131120111331
6212402300133
726101550421
oct6035425731
92078807063
10813050841
11387a45149
121a8357649
13cc5a2295
1479da5481
154b5a3e46
hex30762bd9

813050841 has 4 divisors (see below), whose sum is σ = 1084067792. Its totient is φ = 542033892.

The previous prime is 813050827. The next prime is 813050863. The reversal of 813050841 is 148050318.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 813050841 - 25 = 813050809 is a prime.

It is a super-2 number, since 2×8130508412 = 1322103340101614562, 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 = 813050799 and 813050808.

It is not an unprimeable number, because it can be changed into a prime (813050801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135508471 + ... + 135508476.

It is an arithmetic number, because the mean of its divisors is an integer number (271016948).

Almost surely, 2813050841 is an apocalyptic number.

It is an amenable number.

813050841 is a deficient number, since it is larger than the sum of its proper divisors (271016951).

813050841 is a wasteful number, since it uses less digits than its factorization.

813050841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271016950.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 813050841 is about 28514.0463806875. The cubic root of 813050841 is about 933.3386154321.

The spelling of 813050841 in words is "eight hundred thirteen million, fifty thousand, eight hundred forty-one".

Divisors: 1 3 271016947 813050841