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7089381 = 321325979
BaseRepresentation
bin11011000010110011100101
3111100011210200
4123002303211
53303330011
6411541113
7114154515
oct33026345
914304720
107089381
1140023a2
12245a799
131612b00
14d27845
15950856
hex6c2ce5

7089381 has 36 divisors (see below), whose sum is σ = 11419200. Its totient is φ = 4234464.

The previous prime is 7089377. The next prime is 7089403. The reversal of 7089381 is 1839807.

7089381 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7089381 - 22 = 7089377 is a prime.

It is a super-2 number, since 2×70893812 = 100518645926322, which contains 22 as substring.

It is a Curzon number.

7089381 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7089301) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 89700 + ... + 89778.

It is an arithmetic number, because the mean of its divisors is an integer number (317200).

Almost surely, 27089381 is an apocalyptic number.

It is an amenable number.

7089381 is a deficient number, since it is larger than the sum of its proper divisors (4329819).

7089381 is a wasteful number, since it uses less digits than its factorization.

7089381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 7089381 is about 2662.5891534369. The cubic root of 7089381 is about 192.1038663273.

The spelling of 7089381 in words is "seven million, eighty-nine thousand, three hundred eighty-one".

Divisors: 1 3 9 13 39 59 79 117 169 177 237 507 531 711 767 1027 1521 2301 3081 4661 6903 9243 9971 13351 13983 29913 40053 41949 60593 89739 120159 181779 545337 787709 2363127 7089381