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1807069 = 11164279
BaseRepresentation
bin110111001001011011101
310101210211111
412321023131
5430311234
6102422021
721234265
oct6711335
93353744
101807069
111024750
12731911
134b3694
143507a5
1525a664
hex1b92dd

1807069 has 4 divisors (see below), whose sum is σ = 1971360. Its totient is φ = 1642780.

The previous prime is 1807067. The next prime is 1807093. The reversal of 1807069 is 9607081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1807069 - 21 = 1807067 is a prime.

It is a super-2 number, since 2×18070692 = 6530996741522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1807069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1807061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82129 + ... + 82150.

It is an arithmetic number, because the mean of its divisors is an integer number (492840).

21807069 is an apocalyptic number.

It is an amenable number.

1807069 is a deficient number, since it is larger than the sum of its proper divisors (164291).

1807069 is a wasteful number, since it uses less digits than its factorization.

1807069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164290.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 1807069 is about 1344.2726657937. The cubic root of 1807069 is about 121.8030729657.

The spelling of 1807069 in words is "one million, eight hundred seven thousand, sixty-nine".

Divisors: 1 11 164279 1807069