20238132 has 12 divisors (see below), whose sum is σ = 47222336. Its totient is φ = 6746040.

The previous prime is 20238131. The next prime is 20238151. The reversal of 20238132 is 23183202.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 20238099 and 20238108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20238131) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 843244 + ... + 843267.

Almost surely, 2^20238132 is an apocalyptic number.

It is an amenable number.

20238132 is an abundant number, since it is smaller than the sum of its proper divisors (26984204).

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

20238132 is a wasteful number, since it uses less digits than its factorization.

20238132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686518 (or 1686516 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 20238132 is about 4498.6811400676. The cubic root of 20238132 is about 272.5148301555.

The spelling of 20238132 in words is "twenty million, two hundred thirty-eight thousand, one hundred thirty-two".