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1316287 = 7226863
BaseRepresentation
bin101000001010110111111
32110212121101
411001112333
5314110122
644113531
714121400
oct5012677
92425541
101316287
11819a45
125358a7
1337118b
142639a7
151b0027
hex1415bf

1316287 has 6 divisors (see below), whose sum is σ = 1531248. Its totient is φ = 1128204.

The previous prime is 1316279. The next prime is 1316299. The reversal of 1316287 is 7826131.

It is not a de Polignac number, because 1316287 - 23 = 1316279 is a prime.

It is a super-2 number, since 2×13162872 = 3465222932738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316257) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13383 + ... + 13480.

It is an arithmetic number, because the mean of its divisors is an integer number (255208).

21316287 is an apocalyptic number.

1316287 is a deficient number, since it is larger than the sum of its proper divisors (214961).

1316287 is an equidigital number, since it uses as much as digits as its factorization.

1316287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26877 (or 26870 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 1316287 is about 1147.2955155495. The cubic root of 1316287 is about 109.5931804857.

The spelling of 1316287 in words is "one million, three hundred sixteen thousand, two hundred eighty-seven".

Divisors: 1 7 49 26863 188041 1316287