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1313430 = 23543781
BaseRepresentation
bin101000000101010010110
32110201200120
411000222112
5314012210
644052410
714110146
oct5005226
92421616
101313430
11817888
12534106
1336caa1
14262926
151ae270
hex140a96

1313430 has 16 divisors (see below), whose sum is σ = 3152304. Its totient is φ = 350240.

The previous prime is 1313423. The next prime is 1313443. The reversal of 1313430 is 343131.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21861 + ... + 21920.

It is an arithmetic number, because the mean of its divisors is an integer number (197019).

21313430 is an apocalyptic number.

1313430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1313430 is an abundant number, since it is smaller than the sum of its proper divisors (1838874).

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

1313430 is a wasteful number, since it uses less digits than its factorization.

1313430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43791.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 1313430 is about 1146.0497371406. The cubic root of 1313430 is about 109.5138324095.

Adding to 1313430 its reverse (343131), we get a palindrome (1656561).

Subtracting from 1313430 its reverse (343131), we obtain a cube (970299 = 993).

The spelling of 1313430 in words is "one million, three hundred thirteen thousand, four hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 43781 87562 131343 218905 262686 437810 656715 1313430