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290830 = 25127229
BaseRepresentation
bin1000111000000001110
3112202221111
41013000032
533301310
610122234
72320621
oct1070016
9482844
10290830
11189561
1212037a
13a24b7
1477db8
155b28a
hex4700e

290830 has 16 divisors (see below), whose sum is σ = 529920. Its totient is φ = 114912.

The previous prime is 290827. The next prime is 290837. The reversal of 290830 is 38092.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290837) 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 7 ways as a sum of consecutive naturals, for example, 1156 + ... + 1384.

It is an arithmetic number, because the mean of its divisors is an integer number (33120).

2290830 is an apocalyptic number.

290830 is a deficient number, since it is larger than the sum of its proper divisors (239090).

290830 is a wasteful number, since it uses less digits than its factorization.

290830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 290830 is about 539.2865657515. The cubic root of 290830 is about 66.2541471238.

The spelling of 290830 in words is "two hundred ninety thousand, eight hundred thirty".

Divisors: 1 2 5 10 127 229 254 458 635 1145 1270 2290 29083 58166 145415 290830