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12302212020 = 2235729290981
BaseRepresentation
bin10110111010100010…
…01101101110110100
31011202100210010022020
423131101031232310
5200143331241040
65352423033140
7613601035230
oct133521155664
934670703266
1012302212020
115243306a7a
122473b9b7b0
1312109583c7
14849c095c0
154c0069cd0
hex2dd44dbb4

12302212020 has 48 divisors (see below), whose sum is σ = 39367079808. Its totient is φ = 2811934080.

The previous prime is 12302211949. The next prime is 12302212031. The reversal of 12302212020 is 2021220321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14645071 + ... + 14645910.

It is an arithmetic number, because the mean of its divisors is an integer number (820147496).

Almost surely, 212302212020 is an apocalyptic number.

12302212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12302212020 is an abundant number, since it is smaller than the sum of its proper divisors (27064867788).

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

12302212020 is a wasteful number, since it uses less digits than its factorization.

12302212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29291000 (or 29290998 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 12302212020 its reverse (2021220321), we get a palindrome (14323432341).

The spelling of 12302212020 in words is "twelve billion, three hundred two million, two hundred twelve thousand, twenty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 60 70 84 105 140 210 420 29290981 58581962 87872943 117163924 146454905 175745886 205036867 292909810 351491772 410073734 439364715 585819620 615110601 820147468 878729430 1025184335 1230221202 1757458860 2050368670 2460442404 3075553005 4100737340 6151106010 12302212020