10820239 has 2 divisors, whose sum is σ = 10820240. Its totient is φ = 10820238.

The previous prime is 10820233. The next prime is 10820267. The reversal of 10820239 is 93202801.

10820239 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 weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10820239 - 2⁷ = 10820111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10820233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5410119 + 5410120.

It is an arithmetic number, because the mean of its divisors is an integer number (5410120).

Almost surely, 2^10820239 is an apocalyptic number.

10820239 is a deficient number, since it is larger than the sum of its proper divisors (1).

10820239 is an equidigital number, since it uses as much as digits as its factorization.

10820239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 10820239 is about 3289.4131695486. The cubic root of 10820239 is about 221.1798798935.

It can be divided in two parts, 108202 and 39, that added together give a square (108241 = 329²).

The spelling of 10820239 in words is "ten million, eight hundred twenty thousand, two hundred thirty-nine".