Search a number
-
+
1081230 = 235231567
BaseRepresentation
bin100000111111110001110
32000221011120
410013332032
5234044410
635101410
712122163
oct4077616
92027146
101081230
11679387
12441866
132bb1a7
1420206a
15165570
hex107f8e

1081230 has 32 divisors (see below), whose sum is σ = 2709504. Its totient is φ = 275616.

The previous prime is 1081229. The next prime is 1081231. The reversal of 1081230 is 321801.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1081229) and next prime (1081231).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94 + ... + 1473.

It is an arithmetic number, because the mean of its divisors is an integer number (84672).

21081230 is an apocalyptic number.

1081230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1081230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1354752).

1081230 is an abundant number, since it is smaller than the sum of its proper divisors (1628274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1081230 is a wasteful number, since it uses less digits than its factorization.

1081230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1081230 is about 1039.8221001691. The cubic root of 1081230 is about 102.6374914757.

The spelling of 1081230 in words is "one million, eighty-one thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 23 30 46 69 115 138 230 345 690 1567 3134 4701 7835 9402 15670 23505 36041 47010 72082 108123 180205 216246 360410 540615 1081230