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10720286 = 25360143
BaseRepresentation
bin101000111001…
…010000011110
3202011122110122
4220321100132
510221022121
61021434542
7160056323
oct50712036
922148418
1010720286
116062345
12370ba52
1322b4685
1415d0b4a
15e1b5ab
hexa3941e

10720286 has 4 divisors (see below), whose sum is σ = 16080432. Its totient is φ = 5360142.

The previous prime is 10720271. The next prime is 10720289. The reversal of 10720286 is 68202701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68202701 = 79743243.

It is a super-2 number, since 2×107202862 = 229849063843592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10720289) 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 as a sum of consecutive naturals, namely, 2680070 + ... + 2680073.

It is an arithmetic number, because the mean of its divisors is an integer number (4020108).

Almost surely, 210720286 is an apocalyptic number.

10720286 is a deficient number, since it is larger than the sum of its proper divisors (5360146).

10720286 is an equidigital number, since it uses as much as digits as its factorization.

10720286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5360145.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 10720286 is about 3274.1847840340. The cubic root of 10720286 is about 220.4967151400.

Adding to 10720286 its reverse (68202701), we get a palindrome (78922987).

The spelling of 10720286 in words is "ten million, seven hundred twenty thousand, two hundred eighty-six".

Divisors: 1 2 5360143 10720286