20787382 has 32 divisors (see below), whose sum is σ = 39087360. Its totient is φ = 8054880.

The previous prime is 20787373. The next prime is 20787383. The reversal of 20787382 is 28378702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20787383) 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 15 ways as a sum of consecutive naturals, for example, 53244 + ... + 53632.

It is an arithmetic number, because the mean of its divisors is an integer number (1221480).

Almost surely, 2^20787382 is an apocalyptic number.

20787382 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20787382 is a deficient number, since it is larger than the sum of its proper divisors (18299978).

20787382 is a wasteful number, since it uses less digits than its factorization.

20787382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 20787382 is about 4559.3181507765. The cubic root of 20787382 is about 274.9581512076.

The spelling of 20787382 in words is "twenty million, seven hundred eighty-seven thousand, three hundred eighty-two".