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13110220 = 225655511
BaseRepresentation
bin110010000000…
…101111001100
3220200001211201
4302000233030
511324011340
61144555244
7216302134
oct62005714
926601751
1013110220
1174449a2
124482b24
132940436
141a53ac4
15123e79a
hexc80bcc

13110220 has 12 divisors (see below), whose sum is σ = 27531504. Its totient is φ = 5244080.

The previous prime is 13110187. The next prime is 13110257. The reversal of 13110220 is 2201131.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 13110197 and 13110206.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327736 + ... + 327775.

It is an arithmetic number, because the mean of its divisors is an integer number (2294292).

Almost surely, 213110220 is an apocalyptic number.

13110220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13110220 is an abundant number, since it is smaller than the sum of its proper divisors (14421284).

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

13110220 is a wasteful number, since it uses less digits than its factorization.

13110220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655520 (or 655518 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 13110220 is about 3620.8037781686. The cubic root of 13110220 is about 235.7961228803.

Adding to 13110220 its reverse (2201131), we get a palindrome (15311351).

The spelling of 13110220 in words is "thirteen million, one hundred ten thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 655511 1311022 2622044 3277555 6555110 13110220