Search a number
-
+
492980761 = 71341711861
BaseRepresentation
bin11101011000100…
…100101000011001
31021100122000110201
4131120210220121
52002200341021
6120530142201
715134160460
oct3530445031
91240560421
10492980761
11233302819
12119121961
137b1981c0
14496899d7
152d42d591
hex1d624a19

492980761 has 32 divisors (see below), whose sum is σ = 630637056. Its totient is φ = 374976000.

The previous prime is 492980749. The next prime is 492980801. The reversal of 492980761 is 167089294.

It is not a de Polignac number, because 492980761 - 27 = 492980633 is a prime.

It is a super-2 number, since 2×4929807612 = 486060061432278242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (492980561) 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 31 ways as a sum of consecutive naturals, for example, 263971 + ... + 265831.

It is an arithmetic number, because the mean of its divisors is an integer number (19707408).

Almost surely, 2492980761 is an apocalyptic number.

492980761 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

492980761 is a deficient number, since it is larger than the sum of its proper divisors (137656295).

492980761 is a wasteful number, since it uses less digits than its factorization.

492980761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 492980761 is about 22203.1700664567. The cubic root of 492980761 is about 789.9688931831.

The spelling of 492980761 in words is "four hundred ninety-two million, nine hundred eighty thousand, seven hundred sixty-one".

Divisors: 1 7 13 41 71 91 287 497 533 923 1861 2911 3731 6461 13027 20377 24193 37843 76301 132131 169351 264901 534107 924917 991913 1717703 5417371 6943391 12023921 37921597 70425823 492980761