20443792 has 20 divisors (see below), whose sum is σ = 41940396. Its totient is φ = 9620480.

The previous prime is 20443783. The next prime is 20443793. The reversal of 20443792 is 29734402.

It can be written as a sum of positive squares in 2 ways, for example, as 11587216 + 8856576 = 3404^2 + 2976^2 .

It is a super-3 number, since 3×20443792³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20443793) 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 3 ways as a sum of consecutive naturals, for example, 37309 + ... + 37852.

Almost surely, 2^20443792 is an apocalyptic number.

It is an amenable number.

20443792 is an abundant number, since it is smaller than the sum of its proper divisors (21496604).

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

20443792 is a wasteful number, since it uses less digits than its factorization.

20443792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75186 (or 75180 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 20443792 is about 4521.4811732440. The cubic root of 20443792 is about 273.4348198725.

The spelling of 20443792 in words is "twenty million, four hundred forty-three thousand, seven hundred ninety-two".