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13164972 = 2231097081
BaseRepresentation
bin110010001110…
…000110101100
3220202211221120
4302032012230
511332234342
61150100540
7216620562
oct62160654
926684846
1013164972
117482047
1244aa750
13295c332
141a69a32
151250aec
hexc8e1ac

13164972 has 12 divisors (see below), whose sum is σ = 30718296. Its totient is φ = 4388320.

The previous prime is 13164887. The next prime is 13164973. The reversal of 13164972 is 27946131.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (13164973) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 548529 + ... + 548552.

It is an arithmetic number, because the mean of its divisors is an integer number (2559858).

Almost surely, 213164972 is an apocalyptic number.

13164972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13164972 is an abundant number, since it is smaller than the sum of its proper divisors (17553324).

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

13164972 is a wasteful number, since it uses less digits than its factorization.

13164972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097088 (or 1097086 counting only the distinct ones).

The product of its digits is 9072, while the sum is 33.

The square root of 13164972 is about 3628.3566528113. The cubic root of 13164972 is about 236.1239174948.

The spelling of 13164972 in words is "thirteen million, one hundred sixty-four thousand, nine hundred seventy-two".

Divisors: 1 2 3 4 6 12 1097081 2194162 3291243 4388324 6582486 13164972