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1387282 = 213229233
BaseRepresentation
bin101010010101100010010
32121110222211
411102230102
5323343112
645422334
714535361
oct5225422
92543884
101387282
11868316
1256a9aa
133975a0
142817d8
151c60a7
hex152b12

1387282 has 16 divisors (see below), whose sum is σ = 2260440. Its totient is φ = 634752.

The previous prime is 1387271. The next prime is 1387289. The reversal of 1387282 is 2827831.

It can be written as a sum of positive squares in 4 ways, for example, as 1083681 + 303601 = 1041^2 + 551^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387289) 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, 5838 + ... + 6070.

21387282 is an apocalyptic number.

1387282 is a deficient number, since it is larger than the sum of its proper divisors (873158).

1387282 is a wasteful number, since it uses less digits than its factorization.

1387282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477.

The product of its digits is 5376, while the sum is 31.

The square root of 1387282 is about 1177.8293594575. The cubic root of 1387282 is about 111.5291135676.

The spelling of 1387282 in words is "one million, three hundred eighty-seven thousand, two hundred eighty-two".

Divisors: 1 2 13 26 229 233 458 466 2977 3029 5954 6058 53357 106714 693641 1387282