Search a number
-
+
16490 = 251797
BaseRepresentation
bin100000001101010
3211121202
410001222
51011430
6204202
766035
oct40152
924552
1016490
1111431
129662
137676
14601c
154d45
hex406a

16490 has 16 divisors (see below), whose sum is σ = 31752. Its totient is φ = 6144.

The previous prime is 16487. The next prime is 16493. The reversal of 16490 is 9461.

16490 is an esthetic number in base 13, because in such base its adjacent digits differ by 1.

It is an interprime number because it is at equal distance from previous prime (16487) and next prime (16493).

It can be written as a sum of positive squares in 4 ways, for example, as 14641 + 1849 = 121^2 + 43^2 .

16490 is an undulating number in base 13.

It is a nialpdrome in base 12.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 16490.

It is not an unprimeable number, because it can be changed into a prime (16493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122 + ... + 218.

216490 is an apocalyptic number.

16490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16490 is a deficient number, since it is larger than the sum of its proper divisors (15262).

16490 is a wasteful number, since it uses less digits than its factorization.

16490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 16490 is about 128.4133949399. The cubic root of 16490 is about 25.4530727348.

The spelling of 16490 in words is "sixteen thousand, four hundred ninety".

Divisors: 1 2 5 10 17 34 85 97 170 194 485 970 1649 3298 8245 16490