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13193828 = 221929137
BaseRepresentation
bin110010010101…
…001001100100
3220211022112022
4302111021210
511334200303
61150442312
7220100654
oct62251144
926738468
1013193828
1174a179a
124503398
13296c4cb
141a76364
151259438
hexc95264

13193828 has 18 divisors (see below), whose sum is σ = 24371046. Its totient is φ = 6249024.

The previous prime is 13193827. The next prime is 13193833. The reversal of 13193828 is 82839131.

It can be written as a sum of positive squares in only one way, i.e., 7279204 + 5914624 = 2698^2 + 2432^2 .

It is not an unprimeable number, because it can be changed into a prime (13193821) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3125 + ... + 6012.

It is an arithmetic number, because the mean of its divisors is an integer number (1353947).

Almost surely, 213193828 is an apocalyptic number.

It is an amenable number.

13193828 is a deficient number, since it is larger than the sum of its proper divisors (11177218).

13193828 is a wasteful number, since it uses less digits than its factorization.

13193828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9179 (or 9158 counting only the distinct ones).

The product of its digits is 10368, while the sum is 35.

The square root of 13193828 is about 3632.3309320600. The cubic root of 13193828 is about 236.2963098005.

The spelling of 13193828 in words is "thirteen million, one hundred ninety-three thousand, eight hundred twenty-eight".

Divisors: 1 2 4 19 38 76 361 722 1444 9137 18274 36548 173603 347206 694412 3298457 6596914 13193828