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290344292 = 22717837349
BaseRepresentation
bin10001010011100…
…100110101100100
3202020100000111022
4101103210311210
51043312004132
644451030312
710123612550
oct2123446544
9666300438
10290344292
11139989a67
128129b398
13481c9b74
142a7bc860
151a752e12
hex114e4d64

290344292 has 48 divisors (see below), whose sum is σ = 622339200. Its totient is φ = 115686912.

The previous prime is 290344283. The next prime is 290344297. The reversal of 290344292 is 292443092.

It is not an unprimeable number, because it can be changed into a prime (290344297) 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 15 ways as a sum of consecutive naturals, for example, 35834 + ... + 43182.

It is an arithmetic number, because the mean of its divisors is an integer number (12965400).

Almost surely, 2290344292 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 290344292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311169600).

290344292 is an abundant number, since it is smaller than the sum of its proper divisors (331994908).

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

290344292 is a wasteful number, since it uses less digits than its factorization.

290344292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7460 (or 7458 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 290344292 is about 17039.4921285818. The cubic root of 290344292 is about 662.1724343394.

The spelling of 290344292 in words is "two hundred ninety million, three hundred forty-four thousand, two hundred ninety-two".

Divisors: 1 2 4 7 14 17 28 34 68 83 119 166 238 332 476 581 1162 1411 2324 2822 5644 7349 9877 14698 19754 29396 39508 51443 102886 124933 205772 249866 499732 609967 874531 1219934 1749062 2439868 3498124 4269769 8539538 10369439 17079076 20738878 41477756 72586073 145172146 290344292