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1379345 = 51131809
BaseRepresentation
bin101010000110000010001
32121002002212
411100300101
5323114340
645321505
714503262
oct5206021
92532085
101379345
11862360
12566295
13393aa6
1427c969
151c3a65
hex150c11

1379345 has 16 divisors (see below), whose sum is σ = 1866240. Its totient is φ = 969600.

The previous prime is 1379321. The next prime is 1379353. The reversal of 1379345 is 5439731.

It is a happy number.

It is not a de Polignac number, because 1379345 - 28 = 1379089 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1301 + ... + 2109.

It is an arithmetic number, because the mean of its divisors is an integer number (116640).

21379345 is an apocalyptic number.

It is an amenable number.

1379345 is a deficient number, since it is larger than the sum of its proper divisors (486895).

1379345 is a wasteful number, since it uses less digits than its factorization.

1379345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856.

The product of its digits is 11340, while the sum is 32.

The square root of 1379345 is about 1174.4551928448. The cubic root of 1379345 is about 111.3160109862.

The spelling of 1379345 in words is "one million, three hundred seventy-nine thousand, three hundred forty-five".

Divisors: 1 5 11 31 55 155 341 809 1705 4045 8899 25079 44495 125395 275869 1379345