20606472 has 96 divisors (see below), whose sum is σ = 58968000. Its totient is φ = 6491520.

The previous prime is 20606461. The next prime is 20606473. The reversal of 20606472 is 27460602.

It is not an unprimeable number, because it can be changed into a prime (20606473) 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 23 ways as a sum of consecutive naturals, for example, 148179 + ... + 148317.

It is an arithmetic number, because the mean of its divisors is an integer number (614250).

Almost surely, 2^20606472 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 20606472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29484000).

20606472 is an abundant number, since it is smaller than the sum of its proper divisors (38361528).

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

20606472 is a wasteful number, since it uses less digits than its factorization.

20606472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251 (or 244 counting only the distinct ones).

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

The square root of 20606472 is about 4539.4352071596. The cubic root of 20606472 is about 274.1581838309.

The spelling of 20606472 in words is "twenty million, six hundred six thousand, four hundred seventy-two".