20109332 has 12 divisors (see below), whose sum is σ = 35239680. Its totient is φ = 10040856.

The previous prime is 20109319. The next prime is 20109343. The reversal of 20109332 is 23390102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269 + ... + 6347.

It is an arithmetic number, because the mean of its divisors is an integer number (2936640).

Almost surely, 2^20109332 is an apocalyptic number.

It is an amenable number.

20109332 is a deficient number, since it is larger than the sum of its proper divisors (15130348).

20109332 is a wasteful number, since it uses less digits than its factorization.

20109332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6910 (or 6908 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 20109332 is about 4484.3429842063. The cubic root of 20109332 is about 271.9354842662.

Adding to 20109332 its reverse (23390102), we get a palindrome (43499434).

The spelling of 20109332 in words is "twenty million, one hundred nine thousand, three hundred thirty-two".