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13072210 = 251307221
BaseRepresentation
bin110001110111…
…011101010010
3220121010200221
4301313131102
511321302320
61144103254
7216053254
oct61673522
926533627
1013072210
117419388
124464b2a
132929048
141a43cd4
1512333aa
hexc77752

13072210 has 8 divisors (see below), whose sum is σ = 23529996. Its totient is φ = 5228880.

The previous prime is 13072181. The next prime is 13072219. The reversal of 13072210 is 1227031.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12981609 + 90601 = 3603^2 + 301^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 15.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (13072219) 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, 653601 + ... + 653620.

Almost surely, 213072210 is an apocalyptic number.

13072210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13072210 is a deficient number, since it is larger than the sum of its proper divisors (10457786).

13072210 is a wasteful number, since it uses less digits than its factorization.

13072210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307228.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 13072210 is about 3615.5511336448. The cubic root of 13072210 is about 235.5680238281.

Adding to 13072210 its reverse (1227031), we get a palindrome (14299241).

The spelling of 13072210 in words is "thirteen million, seventy-two thousand, two hundred ten".

Divisors: 1 2 5 10 1307221 2614442 6536105 13072210