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648132 = 22354011
BaseRepresentation
bin10011110001111000100
31012221001220
42132033010
5131220012
621520340
75336412
oct2361704
91187056
10648132
11402a51
122730b0
13199014
1412c2b2
15cc08c
hex9e3c4

648132 has 12 divisors (see below), whose sum is σ = 1512336. Its totient is φ = 216040.

The previous prime is 648119. The next prime is 648133. The reversal of 648132 is 231846.

It is a happy number.

648132 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 an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 648132.

It is not an unprimeable number, because it can be changed into a prime (648133) by changing a digit.

648132 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26994 + ... + 27017.

It is an arithmetic number, because the mean of its divisors is an integer number (126028).

2648132 is an apocalyptic number.

It is an amenable number.

648132 is an abundant number, since it is smaller than the sum of its proper divisors (864204).

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

648132 is a wasteful number, since it uses less digits than its factorization.

648132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54018 (or 54016 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 648132 is about 805.0664568842. The cubic root of 648132 is about 86.5408496511.

Adding to 648132 its reverse (231846), we get a palindrome (879978).

It can be divided in two parts, 648 and 132, that added together give a triangular number (780 = T39).

The spelling of 648132 in words is "six hundred forty-eight thousand, one hundred thirty-two".