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12032301220 = 2251021589241
BaseRepresentation
bin10110011010010111…
…00101100010100100
31011001112220020021221
423031023211202210
5144120232114340
65305541550124
7604112605252
oct131513454244
934045806257
1012032301220
115114a13aa5
1223b9715344
131199a64084
148220295d2
154a650144a
hex2cd2e58a4

12032301220 has 24 divisors (see below), whose sum is σ = 25292623608. Its totient is φ = 4808198400.

The previous prime is 12032301163. The next prime is 12032301263. The reversal of 12032301220 is 2210323021.

It can be written as a sum of positive squares in 4 ways, for example, as 252237924 + 11780063296 = 15882^2 + 108536^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12032301194 and 12032301203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274201 + ... + 315040.

It is an arithmetic number, because the mean of its divisors is an integer number (1053859317).

Almost surely, 212032301220 is an apocalyptic number.

12032301220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12032301220 is an abundant number, since it is smaller than the sum of its proper divisors (13260322388).

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

12032301220 is a wasteful number, since it uses less digits than its factorization.

12032301220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590271 (or 590269 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 12032301220 its reverse (2210323021), we get a palindrome (14242624241).

The spelling of 12032301220 in words is "twelve billion, thirty-two million, three hundred one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 1021 2042 4084 5105 10210 20420 589241 1178482 2356964 2946205 5892410 11784820 601615061 1203230122 2406460244 3008075305 6016150610 12032301220