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1380197 = 71329523
BaseRepresentation
bin101010000111101100101
32121010021102
411100331211
5323131242
645325445
714505620
oct5207545
92533242
101380197
11862a65
12566885
133942b0
1427cdb7
151c3e32
hex150f65

1380197 has 16 divisors (see below), whose sum is σ = 1760640. Its totient is φ = 1052352.

The previous prime is 1380163. The next prime is 1380199. The reversal of 1380197 is 7910831.

It is not a de Polignac number, because 1380197 - 210 = 1379173 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2378 + ... + 2900.

It is an arithmetic number, because the mean of its divisors is an integer number (110040).

21380197 is an apocalyptic number.

It is an amenable number.

1380197 is a deficient number, since it is larger than the sum of its proper divisors (380443).

1380197 is a wasteful number, since it uses less digits than its factorization.

1380197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 1380197 is about 1174.8178582231. The cubic root of 1380197 is about 111.3389256596.

The spelling of 1380197 in words is "one million, three hundred eighty thousand, one hundred ninety-seven".

Divisors: 1 7 13 29 91 203 377 523 2639 3661 6799 15167 47593 106169 197171 1380197