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13220058 = 237131033
BaseRepresentation
bin110010011011…
…100011011010
3220212122111210
4302123203122
511341020213
61151203550
7220240305
oct62334332
926778453
1013220058
11750a475
1245165b6
13297b427
141a81b3c
1512620c3
hexc9b8da

13220058 has 16 divisors (see below), whose sum is σ = 26813376. Its totient is φ = 4344480.

The previous prime is 13220057. The next prime is 13220069. The reversal of 13220058 is 85002231.

It is not an unprimeable number, because it can be changed into a prime (13220057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15091 + ... + 15942.

It is an arithmetic number, because the mean of its divisors is an integer number (1675836).

Almost surely, 213220058 is an apocalyptic number.

13220058 is an abundant number, since it is smaller than the sum of its proper divisors (13593318).

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

13220058 is a wasteful number, since it uses less digits than its factorization.

13220058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31109.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 13220058 is about 3635.9397684780. The cubic root of 13220058 is about 236.4527958329.

Adding to 13220058 its reverse (85002231), we get a palindrome (98222289).

The spelling of 13220058 in words is "thirteen million, two hundred twenty thousand, fifty-eight".

Divisors: 1 2 3 6 71 142 213 426 31033 62066 93099 186198 2203343 4406686 6610029 13220058