20047266 has 48 divisors (see below), whose sum is σ = 46096128. Its totient is φ = 6285600.

The previous prime is 20047259. The next prime is 20047273. The reversal of 20047266 is 66274002.

It is an interprime number because it is at equal distance from previous prime (20047259) and next prime (20047273).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20161 + ... + 21131.

It is an arithmetic number, because the mean of its divisors is an integer number (960336).

Almost surely, 2^20047266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20047266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23048064).

20047266 is an abundant number, since it is smaller than the sum of its proper divisors (26048862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20047266 is a wasteful number, since it uses less digits than its factorization.

20047266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047 (or 1044 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 20047266 is about 4477.4173359203. The cubic root of 20047266 is about 271.6554262018.

The spelling of 20047266 in words is "twenty million, forty-seven thousand, two hundred sixty-six".