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13139052 = 2231094921
BaseRepresentation
bin110010000111…
…110001101100
3220201112101120
4302013301230
511330422202
61145340540
7216452163
oct62076154
926645346
1013139052
117464623
124497750
1329505b4
141a603da
1512480bc
hexc87c6c

13139052 has 12 divisors (see below), whose sum is σ = 30657816. Its totient is φ = 4379680.

The previous prime is 13139029. The next prime is 13139057. The reversal of 13139052 is 25093131.

It is a happy number.

13139052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (13139057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 547449 + ... + 547472.

It is an arithmetic number, because the mean of its divisors is an integer number (2554818).

Almost surely, 213139052 is an apocalyptic number.

13139052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13139052 is an abundant number, since it is smaller than the sum of its proper divisors (17518764).

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

13139052 is a wasteful number, since it uses less digits than its factorization.

13139052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094928 (or 1094926 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 13139052 is about 3624.7830279894. The cubic root of 13139052 is about 235.9688506240.

The spelling of 13139052 in words is "thirteen million, one hundred thirty-nine thousand, fifty-two".

Divisors: 1 2 3 4 6 12 1094921 2189842 3284763 4379684 6569526 13139052