20205632 has 28 divisors (see below), whose sum is σ = 40239696. Its totient is φ = 10066560.

The previous prime is 20205623. The next prime is 20205697. The reversal of 20205632 is 23650202.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31103 + ... + 31745.

It is an arithmetic number, because the mean of its divisors is an integer number (1437132).

Almost surely, 2^20205632 is an apocalyptic number.

It is an amenable number.

20205632 is a deficient number, since it is larger than the sum of its proper divisors (20034064).

20205632 is an equidigital number, since it uses as much as digits as its factorization.

20205632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146 (or 1136 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 20205632 is about 4495.0675189590. The cubic root of 20205632 is about 272.3688766791.

Adding to 20205632 its reverse (23650202), we get a palindrome (43855834).

The spelling of 20205632 in words is "twenty million, two hundred five thousand, six hundred thirty-two".