20266444 has 24 divisors (see below), whose sum is σ = 38839248. Its totient is φ = 9176640.

The previous prime is 20266429. The next prime is 20266451. The reversal of 20266444 is 44466202.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13222 + ... + 14674.

It is an arithmetic number, because the mean of its divisors is an integer number (1618302).

Almost surely, 2^20266444 is an apocalyptic number.

It is an amenable number.

20266444 is a deficient number, since it is larger than the sum of its proper divisors (18572804).

20266444 is a wasteful number, since it uses less digits than its factorization.

20266444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785 (or 1783 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 20266444 is about 4501.8267403355. The cubic root of 20266444 is about 272.6418485457.

The spelling of 20266444 in words is "twenty million, two hundred sixty-six thousand, four hundred forty-four".