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219140 = 22510957
BaseRepresentation
bin110101100000000100
3102010121022
4311200010
524003030
64410312
71601615
oct654004
9363538
10219140
1113a709
12a6998
137898c
1459c0c
1544de5
hex35804

219140 has 12 divisors (see below), whose sum is σ = 460236. Its totient is φ = 87648.

The previous prime is 219133. The next prime is 219143. The reversal of 219140 is 41912.

It is a happy number.

219140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 107584 + 111556 = 328^2 + 334^2 .

It is not an unprimeable number, because it can be changed into a prime (219143) by changing a digit.

219140 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, 5459 + ... + 5498.

It is an arithmetic number, because the mean of its divisors is an integer number (38353).

2219140 is an apocalyptic number.

219140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

219140 is an abundant number, since it is smaller than the sum of its proper divisors (241096).

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

219140 is a wasteful number, since it uses less digits than its factorization.

219140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10966 (or 10964 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 219140 is about 468.1239152190. The cubic root of 219140 is about 60.2893431733.

The spelling of 219140 in words is "two hundred nineteen thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 10957 21914 43828 54785 109570 219140