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292030981 = 111713711399
BaseRepresentation
bin10001011010000…
…000101000000101
3202100111201012021
4101122000220011
51044224442411
644551123141
710144136164
oct2132005005
9670451167
10292030981
1113a931220
12819734b1
134866a7c8
142aadb3db
151a987a71
hex11680a05

292030981 has 16 divisors (see below), whose sum is σ = 339811200. Its totient is φ = 248020480.

The previous prime is 292030979. The next prime is 292030997. The reversal of 292030981 is 189030292.

It is not a de Polignac number, because 292030981 - 21 = 292030979 is a prime.

It is a super-2 number, since 2×2920309812 = 170564187727644722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (292030951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19920 + ... + 31318.

It is an arithmetic number, because the mean of its divisors is an integer number (21238200).

Almost surely, 2292030981 is an apocalyptic number.

It is an amenable number.

292030981 is a deficient number, since it is larger than the sum of its proper divisors (47780219).

292030981 is a wasteful number, since it uses less digits than its factorization.

292030981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11564.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 292030981 is about 17088.9139795366. The cubic root of 292030981 is about 663.4522059688.

The spelling of 292030981 in words is "two hundred ninety-two million, thirty thousand, nine hundred eighty-one".

Divisors: 1 11 17 137 187 1507 2329 11399 25619 125389 193783 1561663 2131613 17178293 26548271 292030981