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8380269 = 321754773
BaseRepresentation
bin11111111101111101101101
3120202202120100
4133331331231
54121132034
6455341313
7131142162
oct37757555
916682510
108380269
114804247
122981839
131975551
141182069
15b08099
hex7fdf6d

8380269 has 12 divisors (see below), whose sum is σ = 12817116. Its totient is φ = 5258112.

The previous prime is 8380259. The next prime is 8380271. The reversal of 8380269 is 9620838.

It can be written as a sum of positive squares in 2 ways, for example, as 7452900 + 927369 = 2730^2 + 963^2 .

It is not a de Polignac number, because 8380269 - 25 = 8380237 is a prime.

It is a super-2 number, since 2×83802692 = 140457817024722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8380249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27234 + ... + 27539.

It is an arithmetic number, because the mean of its divisors is an integer number (1068093).

Almost surely, 28380269 is an apocalyptic number.

It is an amenable number.

8380269 is a deficient number, since it is larger than the sum of its proper divisors (4436847).

8380269 is a wasteful number, since it uses less digits than its factorization.

8380269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54796 (or 54793 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 8380269 is about 2894.8694271072. The cubic root of 8380269 is about 203.1199837499.

It can be divided in two parts, 8380 and 269, that added together give a square (8649 = 932).

The spelling of 8380269 in words is "eight million, three hundred eighty thousand, two hundred sixty-nine".

Divisors: 1 3 9 17 51 153 54773 164319 492957 931141 2793423 8380269