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2285281 = 4748623
BaseRepresentation
bin1000101101111011100001
311022002211001
420231323201
51041112111
6120552001
725265425
oct10557341
94262731
102285281
111320a69
12922601
1362024b
14436b85
153021c1
hex22dee1

2285281 has 4 divisors (see below), whose sum is σ = 2333952. Its totient is φ = 2236612.

The previous prime is 2285279. The next prime is 2285291. The reversal of 2285281 is 1825822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1825822 = 2912911.

It is a cyclic number.

It is not a de Polignac number, because 2285281 - 21 = 2285279 is a prime.

It is a super-2 number, since 2×22852812 = 10445018497922, 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 (2285221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24265 + ... + 24358.

It is an arithmetic number, because the mean of its divisors is an integer number (583488).

22285281 is an apocalyptic number.

It is an amenable number.

2285281 is a deficient number, since it is larger than the sum of its proper divisors (48671).

2285281 is an equidigital number, since it uses as much as digits as its factorization.

2285281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48670.

The product of its digits is 2560, while the sum is 28.

The square root of 2285281 is about 1511.7145894646. The cubic root of 2285281 is about 131.7184271916.

The spelling of 2285281 in words is "two million, two hundred eighty-five thousand, two hundred eighty-one".

Divisors: 1 47 48623 2285281