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223203020 = 22511160151
BaseRepresentation
bin11010100110111…
…00111011001100
3120112222212222112
431103130323030
5424114444040
634052003152
75350123445
oct1523347314
9515885875
10223203020
11104aa0807
12629004b8
133731c5c1
14219022cc
15148de365
hexd4dcecc

223203020 has 12 divisors (see below), whose sum is σ = 468726384. Its totient is φ = 89281200.

The previous prime is 223202989. The next prime is 223203023. The reversal of 223203020 is 20302322.

It is a super-3 number, since 3×2232030203 (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 223202986 and 223203004.

It is not an unprimeable number, because it can be changed into a prime (223203023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5580056 + ... + 5580095.

It is an arithmetic number, because the mean of its divisors is an integer number (39060532).

Almost surely, 2223203020 is an apocalyptic number.

223203020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223203020 is an abundant number, since it is smaller than the sum of its proper divisors (245523364).

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

223203020 is a wasteful number, since it uses less digits than its factorization.

223203020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11160160 (or 11160158 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 223203020 is about 14939.9805890101. The cubic root of 223203020 is about 606.5966703984.

Adding to 223203020 its reverse (20302322), we get a palindrome (243505342).

The spelling of 223203020 in words is "two hundred twenty-three million, two hundred three thousand, twenty".

Divisors: 1 2 4 5 10 20 11160151 22320302 44640604 55800755 111601510 223203020