20740132 has 18 divisors (see below), whose sum is σ = 42221382. Its totient is φ = 8888544.

The previous prime is 20740127. The next prime is 20740163. The reversal of 20740132 is 23104702.

It can be written as a sum of positive squares in only one way, i.e., 20575296 + 164836 = 4536^2 + 406^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 52713 + ... + 53104.

Almost surely, 2^20740132 is an apocalyptic number.

It is an amenable number.

20740132 is an abundant number, since it is smaller than the sum of its proper divisors (21481250).

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

20740132 is a wasteful number, since it uses less digits than its factorization.

20740132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105835 (or 105826 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 20740132 is about 4554.1335070461. The cubic root of 20740132 is about 274.7496653004.

Adding to 20740132 its reverse (23104702), we get a palindrome (43844834).

The spelling of 20740132 in words is "twenty million, seven hundred forty thousand, one hundred thirty-two".