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2885281 = 72317921
BaseRepresentation
bin1011000000011010100001
312102120212021
423000122201
51214312111
6141501441
733344620
oct13003241
95376767
102885281
1116a0833
12b71881
137a0389
145516b7
153bed71
hex2c06a1

2885281 has 8 divisors (see below), whose sum is σ = 3441024. Its totient is φ = 2365440.

The previous prime is 2885279. The next prime is 2885287. The reversal of 2885281 is 1825882.

It is a happy number.

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

It is not a de Polignac number, because 2885281 - 21 = 2885279 is a prime.

It is a super-2 number, since 2×28852812 = 16649692897922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2885287) 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, 8800 + ... + 9121.

It is an arithmetic number, because the mean of its divisors is an integer number (430128).

22885281 is an apocalyptic number.

It is an amenable number.

2885281 is a deficient number, since it is larger than the sum of its proper divisors (555743).

2885281 is a wasteful number, since it uses less digits than its factorization.

2885281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17951.

The product of its digits is 10240, while the sum is 34.

The square root of 2885281 is about 1698.6114917779. The cubic root of 2885281 is about 142.3626418276.

The spelling of 2885281 in words is "two million, eight hundred eighty-five thousand, two hundred eighty-one".

Divisors: 1 7 23 161 17921 125447 412183 2885281