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261108 = 22327253
BaseRepresentation
bin111111101111110100
3111021011200
4333233310
531323413
65332500
72135151
oct775764
9437150
10261108
111691a1
12107130
1391b03
146b228
1552573
hex3fbf4

261108 has 18 divisors (see below), whose sum is σ = 660114. Its totient is φ = 87024.

The previous prime is 261101. The next prime is 261127. The reversal of 261108 is 801162.

It can be written as a sum of positive squares in only one way, i.e., 242064 + 19044 = 492^2 + 138^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 261108.

It is not an unprimeable number, because it can be changed into a prime (261101) by changing a digit.

261108 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 5 ways as a sum of consecutive naturals, for example, 3591 + ... + 3662.

It is an arithmetic number, because the mean of its divisors is an integer number (36673).

2261108 is an apocalyptic number.

It is an amenable number.

261108 is an abundant number, since it is smaller than the sum of its proper divisors (399006).

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

261108 is a wasteful number, since it uses less digits than its factorization.

261108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7263 (or 7258 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 261108 is about 510.9872796851. The cubic root of 261108 is about 63.9155787947.

The spelling of 261108 in words is "two hundred sixty-one thousand, one hundred eight".

Divisors: 1 2 3 4 6 9 12 18 36 7253 14506 21759 29012 43518 65277 87036 130554 261108