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203230220 = 225591571097
BaseRepresentation
bin11000001110100…
…00110000001100
3112011102011110012
430013100300030
5404011331340
632055532352
75015266634
oct1407206014
9464364405
10203230220
11a4799966
125808a0b8
133314868b
141cdc36c4
1512c96565
hexc1d0c0c

203230220 has 48 divisors (see below), whose sum is σ = 437179680. Its totient is φ = 79332864.

The previous prime is 203230211. The next prime is 203230253. The reversal of 203230220 is 22032302.

It is a junction number, because it is equal to n+sod(n) for n = 203230195 and 203230204.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184712 + ... + 185808.

It is an arithmetic number, because the mean of its divisors is an integer number (9107910).

Almost surely, 2203230220 is an apocalyptic number.

203230220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203230220 is an abundant number, since it is smaller than the sum of its proper divisors (233949460).

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

203230220 is a wasteful number, since it uses less digits than its factorization.

203230220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322 (or 1320 counting only the distinct ones).

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

The square root of 203230220 is about 14255.8836976176. The cubic root of 203230220 is about 587.9351548958.

Adding to 203230220 its reverse (22032302), we get a palindrome (225262522).

The spelling of 203230220 in words is "two hundred three million, two hundred thirty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 59 118 157 236 295 314 590 628 785 1097 1180 1570 2194 3140 4388 5485 9263 10970 18526 21940 37052 46315 64723 92630 129446 172229 185260 258892 323615 344458 647230 688916 861145 1294460 1722290 3444580 10161511 20323022 40646044 50807555 101615110 203230220