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109644 = 2239137
BaseRepresentation
bin11010110001001100
312120101220
4122301030
512002034
62203340
7634443
oct326114
9176356
10109644
1175417
1253550
133aba2
142bd5a
1522749
hex1ac4c

109644 has 12 divisors (see below), whose sum is σ = 255864. Its totient is φ = 36544.

The previous prime is 109639. The next prime is 109661. The reversal of 109644 is 446901.

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

It is an unprimeable number.

109644 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, 4557 + ... + 4580.

It is an arithmetic number, because the mean of its divisors is an integer number (21322).

2109644 is an apocalyptic number.

It is an amenable number.

109644 is an abundant number, since it is smaller than the sum of its proper divisors (146220).

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

109644 is a wasteful number, since it uses less digits than its factorization.

109644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9144 (or 9142 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 109644 is about 331.1253539069. The cubic root of 109644 is about 47.8624534518.

The spelling of 109644 in words is "one hundred nine thousand, six hundred forty-four".

Divisors: 1 2 3 4 6 12 9137 18274 27411 36548 54822 109644