20442632 has 32 divisors (see below), whose sum is σ = 46113600. Its totient is φ = 8299584.

The previous prime is 20442629. The next prime is 20442649. The reversal of 20442632 is 23624402.

It is a junction number, because it is equal to n+sod(n) for n = 20442598 and 20442607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8543 + ... + 10670.

It is an arithmetic number, because the mean of its divisors is an integer number (1441050).

Almost surely, 2^20442632 is an apocalyptic number.

It is an amenable number.

20442632 is an abundant number, since it is smaller than the sum of its proper divisors (25670968).

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

20442632 is a wasteful number, since it uses less digits than its factorization.

20442632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19245 (or 19241 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 20442632 is about 4521.3528948756. The cubic root of 20442632 is about 273.4296481250.

The spelling of 20442632 in words is "twenty million, four hundred forty-two thousand, six hundred thirty-two".