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290913 = 3721979
BaseRepresentation
bin1000111000001100001
3112210001120
41013001201
533302123
610122453
72321100
oct1070141
9483046
10290913
11189627
12120429
13a254c
1478037
155b2e3
hex47061

290913 has 12 divisors (see below), whose sum is σ = 451440. Its totient is φ = 166152.

The previous prime is 290897. The next prime is 290923. The reversal of 290913 is 319092.

It is a happy number.

It is not a de Polignac number, because 290913 - 24 = 290897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (290923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 843 + ... + 1136.

It is an arithmetic number, because the mean of its divisors is an integer number (37620).

2290913 is an apocalyptic number.

It is an amenable number.

290913 is a deficient number, since it is larger than the sum of its proper divisors (160527).

290913 is a wasteful number, since it uses less digits than its factorization.

290913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996 (or 1989 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 290913 is about 539.3635137827. The cubic root of 290913 is about 66.2604492833.

The spelling of 290913 in words is "two hundred ninety thousand, nine hundred thirteen".

Divisors: 1 3 7 21 49 147 1979 5937 13853 41559 96971 290913