10820281 has 4 divisors (see below), whose sum is σ = 11290752. Its totient is φ = 10349812.

The previous prime is 10820267. The next prime is 10820323. The reversal of 10820281 is 18202801.

10820281 is digitally balanced in base 2 and base 3, because in such bases 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 a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18202801 = 17 ⋅1070753.

It is a cyclic number.

It is not a de Polignac number, because 10820281 - 2¹¹ = 10818233 is a prime.

It is a super-2 number, since 2×10820281² = 234156961837922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10820081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235201 + ... + 235246.

It is an arithmetic number, because the mean of its divisors is an integer number (2822688).

Almost surely, 2^10820281 is an apocalyptic number.

It is an amenable number.

10820281 is a deficient number, since it is larger than the sum of its proper divisors (470471).

10820281 is an equidigital number, since it uses as much as digits as its factorization.

10820281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470470.

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 10820281 is about 3289.4195536599. The cubic root of 10820281 is about 221.1801660715.

The spelling of 10820281 in words is "ten million, eight hundred twenty thousand, two hundred eighty-one".