Search a number
-
+
305835238081 = 2861595317957
BaseRepresentation
bin1000111001101010011…
…00110110001011000001
31002020102011221211120001
410130311030312023001
520002322310104311
6352255422320001
731044611426302
oct4346514661301
91066364854501
10305835238081
1110878202300a
124b333729001
1322abca2a5c9
1410b341027a9
157e4eaed4c1
hex47353362c1

305835238081 has 8 divisors (see below), whose sum is σ = 306010569384. Its totient is φ = 305659960320.

The previous prime is 305835238069. The next prime is 305835238153. The reversal of 305835238081 is 180832538503.

It can be written as a sum of positive squares in 4 ways, for example, as 60429930625 + 245405307456 = 245825^2 + 495384^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 305835238081 - 211 = 305835236033 is a prime.

It is a super-2 number, since 2×3058352380812 (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (305835238001) 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, 17022555 + ... + 17040511.

It is an arithmetic number, because the mean of its divisors is an integer number (38251321173).

Almost surely, 2305835238081 is an apocalyptic number.

It is an amenable number.

305835238081 is a deficient number, since it is larger than the sum of its proper divisors (175331303).

305835238081 is a wasteful number, since it uses less digits than its factorization.

305835238081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26771.

The product of its (nonzero) digits is 691200, while the sum is 46.

The spelling of 305835238081 in words is "three hundred five billion, eight hundred thirty-five million, two hundred thirty-eight thousand, eighty-one".

Divisors: 1 2861 5953 17957 17031533 51374977 106898021 305835238081