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1381180 = 225531303
BaseRepresentation
bin101010001001100111100
32121011121211
411101030330
5323144210
645334204
714511523
oct5211474
92534554
101381180
11863779
12567364
13394888
1427d4ba
151c438a
hex15133c

1381180 has 24 divisors (see below), whose sum is σ = 2957472. Its totient is φ = 541632.

The previous prime is 1381153. The next prime is 1381187. The reversal of 1381180 is 811831.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409 + ... + 1711.

It is an arithmetic number, because the mean of its divisors is an integer number (123228).

21381180 is an apocalyptic number.

1381180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1381180 is an abundant number, since it is smaller than the sum of its proper divisors (1576292).

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

1381180 is a wasteful number, since it uses less digits than its factorization.

1381180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365 (or 1363 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 1381180 is about 1175.2361464829. The cubic root of 1381180 is about 111.3653518850.

The spelling of 1381180 in words is "one million, three hundred eighty-one thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 53 106 212 265 530 1060 1303 2606 5212 6515 13030 26060 69059 138118 276236 345295 690590 1381180