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1312074 = 23272893
BaseRepresentation
bin101000000010101001010
32110122211100
411000111022
5313441244
644042230
714103201
oct5002512
92418740
101312074
11816865
12533376
1336c29a
14262238
151adb69
hex14054a

1312074 has 12 divisors (see below), whose sum is σ = 2842866. Its totient is φ = 437352.

The previous prime is 1312027. The next prime is 1312079. The reversal of 1312074 is 4702131.

It can be written as a sum of positive squares in only one way, i.e., 1306449 + 5625 = 1143^2 + 75^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 72893 = 1312074 / (1 + 3 + 1 + 2 + 0 + 7 + 4).

It is not an unprimeable number, because it can be changed into a prime (1312079) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 36429 + ... + 36464.

21312074 is an apocalyptic number.

1312074 is an abundant number, since it is smaller than the sum of its proper divisors (1530792).

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

1312074 is a wasteful number, since it uses less digits than its factorization.

1312074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72901 (or 72898 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 1312074 is about 1145.4579870078. The cubic root of 1312074 is about 109.4761316589.

The spelling of 1312074 in words is "one million, three hundred twelve thousand, seventy-four".

Divisors: 1 2 3 6 9 18 72893 145786 218679 437358 656037 1312074