20258266 has 16 divisors (see below), whose sum is σ = 35438400. Its totient is φ = 8681820.

The previous prime is 20258263. The next prime is 20258267. The reversal of 20258266 is 66285202.

It is not an unprimeable number, because it can be changed into a prime (20258261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14080 + ... + 15451.

It is an arithmetic number, because the mean of its divisors is an integer number (2214900).

Almost surely, 2^20258266 is an apocalyptic number.

20258266 is a deficient number, since it is larger than the sum of its proper divisors (15180134).

20258266 is an equidigital number, since it uses as much as digits as its factorization.

20258266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29554 (or 29540 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 20258266 is about 4500.9183507369. The cubic root of 20258266 is about 272.6051710866.

The spelling of 20258266 in words is "twenty million, two hundred fifty-eight thousand, two hundred sixty-six".