20129332 has 24 divisors (see below), whose sum is σ = 37031456. Its totient is φ = 9561888.

The previous prime is 20129327. The next prime is 20129339. The reversal of 20129332 is 23392102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20129339) 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, 4783 + ... + 7945.

Almost surely, 2^20129332 is an apocalyptic number.

It is an amenable number.

20129332 is a deficient number, since it is larger than the sum of its proper divisors (16902124).

20129332 is a wasteful number, since it uses less digits than its factorization.

20129332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3247 (or 3245 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 20129332 is about 4486.5724110951. The cubic root of 20129332 is about 272.0256067300.

The spelling of 20129332 in words is "twenty million, one hundred twenty-nine thousand, three hundred thirty-two".