Search a number
102489 = 3127269
BaseRepresentation
bin11001000001011001
312012120220
4121001121
511234424
62110253
7604542
oct310131
9165526
10102489
1170002
124b389
133785a
14294c9
1520579
hex19059

102489 has 8 divisors (see below), whose sum is σ = 138240. Its totient is φ = 67536.

The previous prime is 102481. The next prime is 102497. The reversal of 102489 is 984201.

It is an interprime number because it is at equal distance from previous prime (102481) and next prime (102497).

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

It is not a de Polignac number, because 102489 - 23 = 102481 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (102481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247 + ... + 515.

It is an arithmetic number, because the mean of its divisors is an integer number (17280).

2102489 is an apocalyptic number.

It is an amenable number.

102489 is a deficient number, since it is larger than the sum of its proper divisors (35751).

102489 is a wasteful number, since it uses less digits than its factorization.

102489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 102489 is about 320.1390322969. The cubic root of 102489 is about 46.7978339271.

The spelling of 102489 in words is "one hundred two thousand, four hundred eighty-nine".

Divisors: 1 3 127 269 381 807 34163 102489