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7132705 = 51426541
BaseRepresentation
bin11011001101011000100001
3111102101020021
4123031120201
53311221310
6412513441
7114425026
oct33153041
914371207
107132705
1140319a8
12247b881
131629748
14d3954d
1595d5da
hex6cd621

7132705 has 4 divisors (see below), whose sum is σ = 8559252. Its totient is φ = 5706160.

The previous prime is 7132703. The next prime is 7132709. The reversal of 7132705 is 5072317.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5072317 = 31716001.

It can be written as a sum of positive squares in 2 ways, for example, as 762129 + 6370576 = 873^2 + 2524^2 .

It is not a de Polignac number, because 7132705 - 21 = 7132703 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7132705.

It is not an unprimeable number, because it can be changed into a prime (7132703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 713266 + ... + 713275.

It is an arithmetic number, because the mean of its divisors is an integer number (2139813).

Almost surely, 27132705 is an apocalyptic number.

It is an amenable number.

7132705 is a deficient number, since it is larger than the sum of its proper divisors (1426547).

7132705 is a wasteful number, since it uses less digits than its factorization.

7132705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426546.

The product of its (nonzero) digits is 1470, while the sum is 25.

The square root of 7132705 is about 2670.7124517626. The cubic root of 7132705 is about 192.4943946195.

The spelling of 7132705 in words is "seven million, one hundred thirty-two thousand, seven hundred five".

Divisors: 1 5 1426541 7132705