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13202311220 = 225794302223
BaseRepresentation
bin11000100101110101…
…10100100000110100
31021002002110220021122
430102322310200310
5204014242424340
610022015203112
7645110536160
oct142272644064
937062426248
1013202311220
1156653a690a
122685516498
131325287c97
148d358dca0
155240b5db5
hex312eb4834

13202311220 has 24 divisors (see below), whose sum is σ = 31685547264. Its totient is φ = 4526506656.

The previous prime is 13202311211. The next prime is 13202311229. The reversal of 13202311220 is 2211320231.

It is an interprime number because it is at equal distance from previous prime (13202311211) and next prime (13202311229).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13202311229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47150972 + ... + 47151251.

It is an arithmetic number, because the mean of its divisors is an integer number (1320231136).

Almost surely, 213202311220 is an apocalyptic number.

13202311220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13202311220 is an abundant number, since it is smaller than the sum of its proper divisors (18483236044).

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

13202311220 is a wasteful number, since it uses less digits than its factorization.

13202311220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94302239 (or 94302237 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 13202311220 its reverse (2211320231), we get a palindrome (15413631451).

The spelling of 13202311220 in words is "thirteen billion, two hundred two million, three hundred eleven thousand, two hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 94302223 188604446 377208892 471511115 660115561 943022230 1320231122 1886044460 2640462244 3300577805 6601155610 13202311220