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230308722 = 23274732
BaseRepresentation
bin11011011101000…
…11101101110010
3121001100220011200
431232203231302
5432424334342
634504152030
75464410000
oct1556435562
9531326150
10230308722
11109004396
1265168616
1338939967
1422831a70
151534494c
hexdba3b72

230308722 has 90 divisors (see below), whose sum is σ = 590218317. Its totient is φ = 64901088.

The previous prime is 230308717. The next prime is 230308723. The reversal of 230308722 is 227803032.

It can be written as a sum of positive squares in 2 ways, for example, as 229249881 + 1058841 = 15141^2 + 1029^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=10731.

It is not an unprimeable number, because it can be changed into a prime (230308723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 3154878 + ... + 3154950.

Almost surely, 2230308722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 230308722

230308722 is an abundant number, since it is smaller than the sum of its proper divisors (359909595).

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

230308722 is an frugal number, since it uses more digits than its factorization.

230308722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 85 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 230308722 is about 15175.9257378257. The cubic root of 230308722 is about 612.9665778229.

The spelling of 230308722 in words is "two hundred thirty million, three hundred eight thousand, seven hundred twenty-two".

Divisors: 1 2 3 6 7 9 14 18 21 42 49 63 73 98 126 146 147 219 294 343 438 441 511 657 686 882 1022 1029 1314 1533 2058 2401 3066 3087 3577 4599 4802 5329 6174 7154 7203 9198 10658 10731 14406 15987 21462 21609 25039 31974 32193 37303 43218 47961 50078 64386 74606 75117 95922 111909 150234 175273 223818 225351 261121 335727 350546 450702 522242 525819 671454 783363 1051638 1566726 1577457 1827847 2350089 3154914 3655694 4700178 5483541 10967082 12794929 16450623 25589858 32901246 38384787 76769574 115154361 230308722