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224081 = 11131567
BaseRepresentation
bin110110101101010001
3102101101022
4312231101
524132311
64445225
71622204
oct665521
9371338
10224081
111433a0
12a9815
137acc0
145b93b
15465db
hex36b51

224081 has 8 divisors (see below), whose sum is σ = 263424. Its totient is φ = 187920.

The previous prime is 224071. The next prime is 224101. The reversal of 224081 is 180422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-224081 is a prime.

It is a super-2 number, since 2×2240812 = 100424589122, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (224011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 641 + ... + 926.

It is an arithmetic number, because the mean of its divisors is an integer number (32928).

2224081 is an apocalyptic number.

It is an amenable number.

224081 is a deficient number, since it is larger than the sum of its proper divisors (39343).

224081 is a wasteful number, since it uses less digits than its factorization.

224081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 224081 is about 473.3719467818. The cubic root of 224081 is about 60.7390989037.

The spelling of 224081 in words is "two hundred twenty-four thousand, eighty-one".

Divisors: 1 11 13 143 1567 17237 20371 224081