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220010220 = 223251222279
BaseRepresentation
bin11010001110100…
…01011011101100
3120022222200021200
431013101123230
5422310311340
633455325500
75311025133
oct1507213354
9508880250
10220010220
1110320aa31
1261820890
1336772281
142131091a
15144ad330
hexd1d16ec

220010220 has 36 divisors (see below), whose sum is σ = 667364880. Its totient is φ = 58669344.

The previous prime is 220010213. The next prime is 220010227. The reversal of 220010220 is 22010022.

It is an interprime number because it is at equal distance from previous prime (220010213) and next prime (220010227).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (220010227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 610960 + ... + 611319.

Almost surely, 2220010220 is an apocalyptic number.

220010220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220010220 is an abundant number, since it is smaller than the sum of its proper divisors (447354660).

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

220010220 is a wasteful number, since it uses less digits than its factorization.

220010220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222294 (or 1222289 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 220010220 is about 14832.7414863201. The cubic root of 220010220 is about 603.6904214450.

Adding to 220010220 its reverse (22010022), we get a palindrome (242020242).

The spelling of 220010220 in words is "two hundred twenty million, ten thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 1222279 2444558 3666837 4889116 6111395 7333674 11000511 12222790 14667348 18334185 22001022 24445580 36668370 44002044 55002555 73336740 110005110 220010220