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13120402 = 221131091
BaseRepresentation
bin110010000011…
…001110010010
3220200120210211
4302003032102
511324323102
61145114334
7216343621
oct62031622
926616724
1013120402
117451609
1244889aa
132944c69
141a576b8
1512427d7
hexc83392

13120402 has 8 divisors (see below), whose sum is σ = 19774512. Its totient is φ = 6528900.

The previous prime is 13120351. The next prime is 13120411. The reversal of 13120402 is 20402131.

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

It is a plaindrome in base 12.

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, 15124 + ... + 15967.

It is an arithmetic number, because the mean of its divisors is an integer number (2471814).

Almost surely, 213120402 is an apocalyptic number.

13120402 is a deficient number, since it is larger than the sum of its proper divisors (6654110).

13120402 is a wasteful number, since it uses less digits than its factorization.

13120402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31304.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 13120402 is about 3622.2095466718. The cubic root of 13120402 is about 235.8571504565.

Adding to 13120402 its reverse (20402131), we get a palindrome (33522533).

The spelling of 13120402 in words is "thirteen million, one hundred twenty thousand, four hundred two".

Divisors: 1 2 211 422 31091 62182 6560201 13120402