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2284981 = 2399347
BaseRepresentation
bin1000101101110110110101
311022002101221
420231312311
51041104411
6120550341
725264516
oct10556665
94262357
102284981
111320816
129223b1
1362007a
14436a0d
15302071
hex22ddb5

2284981 has 4 divisors (see below), whose sum is σ = 2384352. Its totient is φ = 2185612.

The previous prime is 2284963. The next prime is 2285039. The reversal of 2284981 is 1894822.

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: 1894822 = 2947411.

It is a cyclic number.

It is not a de Polignac number, because 2284981 - 25 = 2284949 is a prime.

It is a super-2 number, since 2×22849812 = 10442276340722, 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 (2284951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49651 + ... + 49696.

It is an arithmetic number, because the mean of its divisors is an integer number (596088).

22284981 is an apocalyptic number.

It is an amenable number.

2284981 is a deficient number, since it is larger than the sum of its proper divisors (99371).

2284981 is an equidigital number, since it uses as much as digits as its factorization.

2284981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99370.

The product of its digits is 9216, while the sum is 34.

The square root of 2284981 is about 1511.6153611286. The cubic root of 2284981 is about 131.7126631656.

The spelling of 2284981 in words is "two million, two hundred eighty-four thousand, nine hundred eighty-one".

Divisors: 1 23 99347 2284981