Search a number
-
+
7220193 = 32406731
BaseRepresentation
bin11011100010101111100001
3111120211020120
4123202233201
53322021233
6414430453
7115241061
oct33425741
914524216
107220193
114091702
122502429
13165a506
14d5d3a1
159794b3
hex6e2be1

7220193 has 4 divisors (see below), whose sum is σ = 9626928. Its totient is φ = 4813460.

The previous prime is 7220177. The next prime is 7220201. The reversal of 7220193 is 3910227.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3910227 = 31303409.

It is a cyclic number.

It is not a de Polignac number, because 7220193 - 24 = 7220177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7220113) 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, 1203363 + ... + 1203368.

It is an arithmetic number, because the mean of its divisors is an integer number (2406732).

Almost surely, 27220193 is an apocalyptic number.

It is an amenable number.

7220193 is a deficient number, since it is larger than the sum of its proper divisors (2406735).

7220193 is a wasteful number, since it uses less digits than its factorization.

7220193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2406734.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 7220193 is about 2687.0416818501. The cubic root of 7220193 is about 193.2782281185.

The spelling of 7220193 in words is "seven million, two hundred twenty thousand, one hundred ninety-three".

Divisors: 1 3 2406731 7220193