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290689692 = 22326392107
BaseRepresentation
bin10001010100111…
…001001010011100
3202020222120021220
4101110321022130
51043404032232
644502253340
710126551546
oct2124711234
9666876256
10290689692
1113a0a5517
1281427250
13482bb147
142a86c696
151a7c042c
hex1153929c

290689692 has 24 divisors (see below), whose sum is σ = 680862336. Its totient is φ = 96527088.

The previous prime is 290689687. The next prime is 290689703. The reversal of 290689692 is 296986092.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 42898 + ... + 49209.

It is an arithmetic number, because the mean of its divisors is an integer number (28369264).

Almost surely, 2290689692 is an apocalyptic number.

It is an amenable number.

290689692 is an abundant number, since it is smaller than the sum of its proper divisors (390172644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

290689692 is a wasteful number, since it uses less digits than its factorization.

290689692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92377 (or 92375 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 51.

The square root of 290689692 is about 17049.6243946898. The cubic root of 290689692 is about 662.4349086162.

The spelling of 290689692 in words is "two hundred ninety million, six hundred eighty-nine thousand, six hundred ninety-two".

Divisors: 1 2 3 4 6 12 263 526 789 1052 1578 3156 92107 184214 276321 368428 552642 1105284 24224141 48448282 72672423 96896564 145344846 290689692