20466544 has 40 divisors (see below), whose sum is σ = 46434528. Its totient is φ = 8555520.

The previous prime is 20466497. The next prime is 20466577. The reversal of 20466544 is 44566402.

It is a congruent number.

It is an unprimeable number.

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, 2364 + ... + 6820.

Almost surely, 2^20466544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20466544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23217264).

20466544 is an abundant number, since it is smaller than the sum of its proper divisors (25967984).

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

20466544 is a wasteful number, since it uses less digits than its factorization.

20466544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4513 (or 4507 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 20466544 is about 4523.9964633054. The cubic root of 20466544 is about 273.5362179332.

The spelling of 20466544 in words is "twenty million, four hundred sixty-six thousand, five hundred forty-four".