20365632 has 84 divisors (see below), whose sum is σ = 66726816. Its totient is φ = 5817600.

The previous prime is 20365601. The next prime is 20365633. The reversal of 20365632 is 23656302.

20365632 is a `hidden beast` number, since 2 + 0 + 3 + 656 + 3 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (84).

It is a junction number, because it is equal to n+sod(n) for n = 20365596 and 20365605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20365633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1507 + ... + 6557.

Almost surely, 2^20365632 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 20365632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33363408).

20365632 is an abundant number, since it is smaller than the sum of its proper divisors (46361184).

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

20365632 is a wasteful number, since it uses less digits than its factorization.

20365632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5076 (or 5063 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 20365632 is about 4512.8297109463. The cubic root of 20365632 is about 273.0859126619.

The spelling of 20365632 in words is "twenty million, three hundred sixty-five thousand, six hundred thirty-two".