20266448 has 20 divisors (see below), whose sum is σ = 41576580. Its totient is φ = 9537024.

The previous prime is 20266429. The next prime is 20266451. The reversal of 20266448 is 84466202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9560464 + 10705984 = 3092^2 + 3272^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36983 + ... + 37526.

It is an arithmetic number, because the mean of its divisors is an integer number (2078829).

Almost surely, 2^20266448 is an apocalyptic number.

It is an amenable number.

20266448 is an abundant number, since it is smaller than the sum of its proper divisors (21310132).

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

20266448 is a wasteful number, since it uses less digits than its factorization.

20266448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74534 (or 74528 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 20266448 is about 4501.8271845996. The cubic root of 20266448 is about 272.6418664829.

The spelling of 20266448 in words is "twenty million, two hundred sixty-six thousand, four hundred forty-eight".