10781285 has 12 divisors (see below), whose sum is σ = 13137132. Its totient is φ = 8493888.

The previous prime is 10781269. The next prime is 10781293. The reversal of 10781285 is 58218701.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1350244 + 9431041 = 1162^2 + 3071^2 .

It is not a de Polignac number, because 10781285 - 2⁴ = 10781269 is a prime.

It is a super-2 number, since 2×10781285² = 232472212502450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34289 + ... + 34601.

It is an arithmetic number, because the mean of its divisors is an integer number (1094761).

Almost surely, 2^10781285 is an apocalyptic number.

It is an amenable number.

10781285 is a deficient number, since it is larger than the sum of its proper divisors (2355847).

10781285 is an frugal number, since it uses more digits than its factorization.

10781285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484 (or 401 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 10781285 is about 3283.4867138455. The cubic root of 10781285 is about 220.9141371164.

Adding to 10781285 its reverse (58218701), we get a palindrome (68999986).

The spelling of 10781285 in words is "ten million, seven hundred eighty-one thousand, two hundred eighty-five".