20466572 has 96 divisors (see below), whose sum is σ = 47738880. Its totient is φ = 7464960.

The previous prime is 20466497. The next prime is 20466577. The reversal of 20466572 is 27566402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20466577) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 280328 + ... + 280400.

It is an arithmetic number, because the mean of its divisors is an integer number (497280).

Almost surely, 2^20466572 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 20466572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23869440).

20466572 is an abundant number, since it is smaller than the sum of its proper divisors (27272308).

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

20466572 is a wasteful number, since it uses less digits than its factorization.

20466572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 20466572 is about 4523.9995579133. Note that the first 3 decimals coincide. The cubic root of 20466572 is about 273.5363426735.

The spelling of 20466572 in words is "twenty million, four hundred sixty-six thousand, five hundred seventy-two".