Search a number
-
+
1361930 = 25136193
BaseRepresentation
bin101001100100000001010
32120012012212
411030200022
5322040210
645105122
714401433
oct5144012
92505185
101361930
11850269
125581a2
13388b9b
1427648a
151bd805
hex14c80a

1361930 has 8 divisors (see below), whose sum is σ = 2451492. Its totient is φ = 544768.

The previous prime is 1361929. The next prime is 1361953. The reversal of 1361930 is 391631.

It can be written as a sum of positive squares in 2 ways, for example, as 1194649 + 167281 = 1093^2 + 409^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1361896 and 1361905.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 68087 + ... + 68106.

21361930 is an apocalyptic number.

1361930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1361930 is a deficient number, since it is larger than the sum of its proper divisors (1089562).

1361930 is a wasteful number, since it uses less digits than its factorization.

1361930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136200.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 1361930 is about 1167.0175662774. The cubic root of 1361930 is about 110.8455498748.

Subtracting from 1361930 its reverse (391631), we obtain a cube (970299 = 993).

The spelling of 1361930 in words is "one million, three hundred sixty-one thousand, nine hundred thirty".

Divisors: 1 2 5 10 136193 272386 680965 1361930