20783382 has 16 divisors (see below), whose sum is σ = 41620080. Its totient is φ = 6918912.

The previous prime is 20783363. The next prime is 20783383. The reversal of 20783382 is 28338702.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20783383) 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, 4338 + ... + 7770.

It is an arithmetic number, because the mean of its divisors is an integer number (2601255).

Almost surely, 2^20783382 is an apocalyptic number.

20783382 is an abundant number, since it is smaller than the sum of its proper divisors (20836698).

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

20783382 is a wasteful number, since it uses less digits than its factorization.

20783382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4447.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 20783382 is about 4558.8794675885. The cubic root of 20783382 is about 274.9405138550.

It can be divided in two parts, 2078 and 3382, that added together give a triangular number (5460 = T₁₀₄).

The spelling of 20783382 in words is "twenty million, seven hundred eighty-three thousand, three hundred eighty-two".