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1315288 = 231312647
BaseRepresentation
bin101000001000111011000
32110211020101
411001013120
5314042123
644105144
714115442
oct5010730
92424211
101315288
11819217
125351b4
133708a0
14263492
151aeaad
hex1411d8

1315288 has 16 divisors (see below), whose sum is σ = 2656080. Its totient is φ = 607008.

The previous prime is 1315283. The next prime is 1315289. The reversal of 1315288 is 8825131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6220 + ... + 6427.

It is an arithmetic number, because the mean of its divisors is an integer number (166005).

21315288 is an apocalyptic number.

It is an amenable number.

1315288 is an abundant number, since it is smaller than the sum of its proper divisors (1340792).

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

1315288 is a wasteful number, since it uses less digits than its factorization.

1315288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12666 (or 12662 counting only the distinct ones).

The product of its digits is 1920, while the sum is 28.

The square root of 1315288 is about 1146.8600612106. The cubic root of 1315288 is about 109.5654481101.

The spelling of 1315288 in words is "one million, three hundred fifteen thousand, two hundred eighty-eight".

Divisors: 1 2 4 8 13 26 52 104 12647 25294 50588 101176 164411 328822 657644 1315288