Search a number
-
+
10712785 = 52142557
BaseRepresentation
bin101000110111…
…011011010001
3202011021011211
4220313123101
510220302120
61021340121
7160025416
oct50673321
922137154
1010712785
116057746
123707641
1322b1135
1415cc10d
15e1925a
hexa376d1

10712785 has 4 divisors (see below), whose sum is σ = 12855348. Its totient is φ = 8570224.

The previous prime is 10712773. The next prime is 10712791. The reversal of 10712785 is 58721701.

It is a happy number.

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 3806401 + 6906384 = 1951^2 + 2628^2 .

It is a cyclic number.

It is not a de Polignac number, because 10712785 - 27 = 10712657 is a prime.

It is a super-2 number, since 2×107127852 = 229527524912450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

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, 1071274 + ... + 1071283.

It is an arithmetic number, because the mean of its divisors is an integer number (3213837).

Almost surely, 210712785 is an apocalyptic number.

It is an amenable number.

10712785 is a deficient number, since it is larger than the sum of its proper divisors (2142563).

10712785 is an equidigital number, since it uses as much as digits as its factorization.

10712785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2142562.

The product of its (nonzero) digits is 3920, while the sum is 31.

The square root of 10712785 is about 3273.0391076185. The cubic root of 10712785 is about 220.4452758480.

The spelling of 10712785 in words is "ten million, seven hundred twelve thousand, seven hundred eighty-five".

Divisors: 1 5 2142557 10712785