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13210212 = 2231100851
BaseRepresentation
bin110010011001…
…001001100100
3220212011000010
4302121021210
511340211322
61151050220
7220166511
oct62311144
926764003
1013210212
117503034
124510970
132976ac2
141a7c308
15125e20c
hexc99264

13210212 has 12 divisors (see below), whose sum is σ = 30823856. Its totient is φ = 4403400.

The previous prime is 13210177. The next prime is 13210213. The reversal of 13210212 is 21201231.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 1100851 = 13210212 / (1 + 3 + 2 + 1 + 0 + 2 + 1 + 2).

It is not an unprimeable number, because it can be changed into a prime (13210213) 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, 550414 + ... + 550437.

Almost surely, 213210212 is an apocalyptic number.

13210212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13210212 is an abundant number, since it is smaller than the sum of its proper divisors (17613644).

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

13210212 is a wasteful number, since it uses less digits than its factorization.

13210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100858 (or 1100856 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 13210212 is about 3634.5855334549. The cubic root of 13210212 is about 236.3940796900.

Adding to 13210212 its reverse (21201231), we get a palindrome (34411443).

The spelling of 13210212 in words is "thirteen million, two hundred ten thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 1100851 2201702 3302553 4403404 6605106 13210212