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13120874 = 2133173223
BaseRepresentation
bin110010000011…
…010101101010
3220200121110022
4302003111222
511324331444
61145120442
7216345164
oct62032552
926617408
1013120874
1174519a8
124489122
132945240
141a57934
1512429ee
hexc8356a

13120874 has 32 divisors (see below), whose sum is σ = 22278144. Its totient is φ = 5754240.

The previous prime is 13120867. The next prime is 13120883. The reversal of 13120874 is 47802131.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58727 + ... + 58949.

It is an arithmetic number, because the mean of its divisors is an integer number (696192).

Almost surely, 213120874 is an apocalyptic number.

13120874 is a deficient number, since it is larger than the sum of its proper divisors (9157270).

13120874 is a wasteful number, since it uses less digits than its factorization.

13120874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 13120874 is about 3622.2746996880. The cubic root of 13120874 is about 235.8599787042.

The spelling of 13120874 in words is "thirteen million, one hundred twenty thousand, eight hundred seventy-four".

Divisors: 1 2 13 26 31 62 73 146 223 403 446 806 949 1898 2263 2899 4526 5798 6913 13826 16279 29419 32558 58838 89869 179738 211627 423254 504649 1009298 6560437 13120874