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13231674 = 23481677
BaseRepresentation
bin110010011110…
…011000111010
3220220020110000
4302132120322
511341403144
61151333430
7220316211
oct62363072
926806400
1013231674
117518175
124521276
1329837c1
141a86078
151265769
hexc9e63a

13231674 has 20 divisors (see below), whose sum is σ = 29649114. Its totient is φ = 4410504.

The previous prime is 13231667. The next prime is 13231679. The reversal of 13231674 is 47613231.

It can be written as a sum of positive squares in only one way, i.e., 12006225 + 1225449 = 3465^2 + 1107^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (13231679) 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 9 ways as a sum of consecutive naturals, for example, 40677 + ... + 41000.

Almost surely, 213231674 is an apocalyptic number.

13231674 is an abundant number, since it is smaller than the sum of its proper divisors (16417440).

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

13231674 is an equidigital number, since it uses as much as digits as its factorization.

13231674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81691 (or 81682 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 13231674 is about 3637.5368039375. The cubic root of 13231674 is about 236.5220298108.

The spelling of 13231674 in words is "thirteen million, two hundred thirty-one thousand, six hundred seventy-four".

Divisors: 1 2 3 6 9 18 27 54 81 162 81677 163354 245031 490062 735093 1470186 2205279 4410558 6615837 13231674