Search a number
-
+
1230087 = 3410029
BaseRepresentation
bin100101100010100000111
32022111100210
410230110013
5303330322
642210503
713312155
oct4542407
92274323
101230087
11770201
124b3a33
13340b81
142403d5
1519470c
hex12c507

1230087 has 4 divisors (see below), whose sum is σ = 1640120. Its totient is φ = 820056.

The previous prime is 1230071. The next prime is 1230107. The reversal of 1230087 is 7800321.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1230087 - 24 = 1230071 is a prime.

It is a super-2 number, since 2×12300872 = 3026228055138, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

1230087 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230067) 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, 205012 + ... + 205017.

It is an arithmetic number, because the mean of its divisors is an integer number (410030).

21230087 is an apocalyptic number.

1230087 is a deficient number, since it is larger than the sum of its proper divisors (410033).

1230087 is an equidigital number, since it uses as much as digits as its factorization.

1230087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410032.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 1230087 is about 1109.0928725765. The cubic root of 1230087 is about 107.1466530719.

The spelling of 1230087 in words is "one million, two hundred thirty thousand, eighty-seven".

Divisors: 1 3 410029 1230087