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12222302320 = 245178986987
BaseRepresentation
bin10110110001000000…
…11000100001110000
31011112210102021210201
423120200120201300
5200012402133240
65340450204544
7611610566314
oct133040304160
934483367721
1012222302320
1152021976a8
122451283754
1311ca22a167
1483d367b44
154b8032d9a
hex2d8818870

12222302320 has 40 divisors (see below), whose sum is σ = 30088435824. Its totient is φ = 4601336832.

The previous prime is 12222302317. The next prime is 12222302321. The reversal of 12222302320 is 2320322221.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222302321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4492134 + ... + 4494853.

Almost surely, 212222302320 is an apocalyptic number.

12222302320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12222302320 is an abundant number, since it is smaller than the sum of its proper divisors (17866133504).

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

12222302320 is a wasteful number, since it uses less digits than its factorization.

12222302320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8987017 (or 8987011 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 12222302320 its reverse (2320322221), we get a palindrome (14542624541).

The spelling of 12222302320 in words is "twelve billion, two hundred twenty-two million, three hundred two thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 16 17 20 34 40 68 80 85 136 170 272 340 680 1360 8986987 17973974 35947948 44934935 71895896 89869870 143791792 152778779 179739740 305557558 359479480 611115116 718958960 763893895 1222230232 1527787790 2444460464 3055575580 6111151160 12222302320