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7380397 = 17434141
BaseRepresentation
bin11100001001110110101101
3111212222000001
4130021312231
53342133042
6422104301
7116506123
oct34116655
914788001
107380397
114191002
12257b091
1316b53cb
14da1913
159abbb7
hex709dad

7380397 has 4 divisors (see below), whose sum is σ = 7814556. Its totient is φ = 6946240.

The previous prime is 7380389. The next prime is 7380403. The reversal of 7380397 is 7930837.

7380397 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7930837 = 23344819.

It can be written as a sum of positive squares in 2 ways, for example, as 2232036 + 5148361 = 1494^2 + 2269^2 .

It is a cyclic number.

It is not a de Polignac number, because 7380397 - 23 = 7380389 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 (7384397) 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, 217054 + ... + 217087.

It is an arithmetic number, because the mean of its divisors is an integer number (1953639).

Almost surely, 27380397 is an apocalyptic number.

It is an amenable number.

7380397 is a deficient number, since it is larger than the sum of its proper divisors (434159).

7380397 is a wasteful number, since it uses less digits than its factorization.

7380397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434158.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 7380397 is about 2716.6886093183. The cubic root of 7380397 is about 194.6972905758.

It can be divided in two parts, 7380 and 397, that added together give a palindrome (7777).

The spelling of 7380397 in words is "seven million, three hundred eighty thousand, three hundred ninety-seven".

Divisors: 1 17 434141 7380397