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7213093 = 39718169
BaseRepresentation
bin11011100001000000100101
3111120110111121
4123201000211
53321304333
6414333541
7115211266
oct33410045
914513447
107213093
114087338
1224ba2b1
131657204
14d5a96d
1597732d
hex6e1025

7213093 has 4 divisors (see below), whose sum is σ = 7231660. Its totient is φ = 7194528.

The previous prime is 7213091. The next prime is 7213097. The reversal of 7213093 is 3903127.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2815684 + 4397409 = 1678^2 + 2097^2 .

It is a cyclic number.

It is not a de Polignac number, because 7213093 - 21 = 7213091 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7213091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8688 + ... + 9481.

It is an arithmetic number, because the mean of its divisors is an integer number (1807915).

Almost surely, 27213093 is an apocalyptic number.

It is an amenable number.

7213093 is a deficient number, since it is larger than the sum of its proper divisors (18567).

7213093 is a wasteful number, since it uses less digits than its factorization.

7213093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18566.

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 7213093 is about 2685.7202013613. The cubic root of 7213093 is about 193.2148537518.

The spelling of 7213093 in words is "seven million, two hundred thirteen thousand, ninety-three".

Divisors: 1 397 18169 7213093