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7089081 = 32363027
BaseRepresentation
bin11011000010101110111001
3111100011101120
4123002232321
53303322311
6411535453
7114153606
oct33025671
914304346
107089081
11400214a
12245a589
13161292c
14d276ad
15950706
hex6c2bb9

7089081 has 4 divisors (see below), whose sum is σ = 9452112. Its totient is φ = 4726052.

The previous prime is 7089073. The next prime is 7089091. The reversal of 7089081 is 1809807.

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 7089081 - 23 = 7089073 is a prime.

It is a super-2 number, since 2×70890812 = 100510138849122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7089001) 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, 1181511 + ... + 1181516.

It is an arithmetic number, because the mean of its divisors is an integer number (2363028).

Almost surely, 27089081 is an apocalyptic number.

It is an amenable number.

7089081 is a deficient number, since it is larger than the sum of its proper divisors (2363031).

7089081 is a wasteful number, since it uses less digits than its factorization.

7089081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2363030.

The product of its (nonzero) digits is 4032, while the sum is 33.

The square root of 7089081 is about 2662.5328166992. The cubic root of 7089081 is about 192.1011565480.

The spelling of 7089081 in words is "seven million, eighty-nine thousand, eighty-one".

Divisors: 1 3 2363027 7089081