20908132 has 24 divisors (see below), whose sum is σ = 44018240. Its totient is φ = 8488800.

The previous prime is 20908117. The next prime is 20908133. The reversal of 20908132 is 23180902.

It is a junction number, because it is equal to n+sod(n) for n = 20908097 and 20908106.

It is not an unprimeable number, because it can be changed into a prime (20908133) 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 7 ways as a sum of consecutive naturals, for example, 19119 + ... + 20182.

Almost surely, 2^20908132 is an apocalyptic number.

It is an amenable number.

20908132 is an abundant number, since it is smaller than the sum of its proper divisors (23110108).

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

20908132 is a wasteful number, since it uses less digits than its factorization.

20908132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39331 (or 39329 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 20908132 is about 4572.5410878416. The cubic root of 20908132 is about 275.4895170928.

The spelling of 20908132 in words is "twenty million, nine hundred eight thousand, one hundred thirty-two".