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1982007 = 321911153
BaseRepresentation
bin111100011111000110111
310201200210200
413203320313
51001411012
6110251543
722563306
oct7437067
93650720
101982007
111134125
127b6bb3
135451b1
1439843d
152923dc
hex1e3e37

1982007 has 12 divisors (see below), whose sum is σ = 2880384. Its totient is φ = 1313280.

The previous prime is 1981997. The next prime is 1982011. The reversal of 1982007 is 7002891.

It is not a de Polignac number, because 1982007 - 27 = 1981879 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1982077) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1143 + ... + 2295.

It is an arithmetic number, because the mean of its divisors is an integer number (240032).

21982007 is an apocalyptic number.

1982007 is a deficient number, since it is larger than the sum of its proper divisors (898377).

1982007 is a wasteful number, since it uses less digits than its factorization.

1982007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350 (or 1347 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 1982007 is about 1407.8377037145. The cubic root of 1982007 is about 125.6131369209.

Adding to 1982007 its reverse (7002891), we get a palindrome (8984898).

It can be divided in two parts, 198 and 2007, that multiplied together give a triangular number (397386 = T891).

The spelling of 1982007 in words is "one million, nine hundred eighty-two thousand, seven".

Divisors: 1 3 9 191 573 1153 1719 3459 10377 220223 660669 1982007