20853266 has 16 divisors (see below), whose sum is σ = 36902400. Its totient is φ = 8648640.

The previous prime is 20853257. The next prime is 20853269. The reversal of 20853266 is 66235802.

It is not an unprimeable number, because it can be changed into a prime (20853269) 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 in 7 ways as a sum of consecutive naturals, for example, 23591 + ... + 24458.

It is an arithmetic number, because the mean of its divisors is an integer number (2306400).

Almost surely, 2^20853266 is an apocalyptic number.

20853266 is a deficient number, since it is larger than the sum of its proper divisors (16049134).

20853266 is a wasteful number, since it uses less digits than its factorization.

20853266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48089.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 20853266 is about 4566.5376380799. The cubic root of 20853266 is about 275.2483310560.

The spelling of 20853266 in words is "twenty million, eight hundred fifty-three thousand, two hundred sixty-six".