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7270989 = 311220333
BaseRepresentation
bin11011101111001001001101
3111200101220220
4123233021031
53330132424
6415501553
7115542135
oct33571115
914611826
107270989
114116890
1225278b9
13167767b
14d73ac5
15989579
hex6ef24d

7270989 has 8 divisors (see below), whose sum is σ = 10576032. Its totient is φ = 4406640.

The previous prime is 7270987. The next prime is 7270993. The reversal of 7270989 is 9890727.

7270989 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7270989 - 21 = 7270987 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7270989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7270987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110134 + ... + 110199.

It is an arithmetic number, because the mean of its divisors is an integer number (1322004).

Almost surely, 27270989 is an apocalyptic number.

It is an amenable number.

7270989 is a deficient number, since it is larger than the sum of its proper divisors (3305043).

7270989 is a wasteful number, since it uses less digits than its factorization.

7270989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220347.

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 7270989 is about 2696.4771462039. The cubic root of 7270989 is about 193.7304241061.

The spelling of 7270989 in words is "seven million, two hundred seventy thousand, nine hundred eighty-nine".

Divisors: 1 3 11 33 220333 660999 2423663 7270989