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4490287 = 131151227
BaseRepresentation
bin10001001000010000101111
322110010111221
4101020100233
52122142122
6240124211
753111134
oct21102057
98403457
104490287
11259768a
121606667
13c12a99
1484c58b
155da6c7
hex44842f

4490287 has 8 divisors (see below), whose sum is σ = 4574592. Its totient is φ = 4407000.

The previous prime is 4490263. The next prime is 4490293. The reversal of 4490287 is 7820944.

It is a happy number.

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-4490287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4490207) 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, 19668 + ... + 19894.

It is an arithmetic number, because the mean of its divisors is an integer number (571824).

Almost surely, 24490287 is an apocalyptic number.

4490287 is a deficient number, since it is larger than the sum of its proper divisors (84305).

4490287 is a wasteful number, since it uses less digits than its factorization.

4490287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 4490287 is about 2119.0297307966. The cubic root of 4490287 is about 164.9774931039.

The spelling of 4490287 in words is "four million, four hundred ninety thousand, two hundred eighty-seven".

Divisors: 1 131 151 227 19781 29737 34277 4490287