20448782 has 4 divisors (see below), whose sum is σ = 30673176. Its totient is φ = 10224390.

The previous prime is 20448767. The next prime is 20448803. The reversal of 20448782 is 28784402.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5112194 + ... + 5112197.

It is an arithmetic number, because the mean of its divisors is an integer number (7668294).

Almost surely, 2^20448782 is an apocalyptic number.

20448782 is a deficient number, since it is larger than the sum of its proper divisors (10224394).

20448782 is a wasteful number, since it uses less digits than its factorization.

20448782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10224393.

The product of its (nonzero) digits is 28672, while the sum is 35.

The square root of 20448782 is about 4522.0329499021. The cubic root of 20448782 is about 273.4570650730.

The spelling of 20448782 in words is "twenty million, four hundred forty-eight thousand, seven hundred eighty-two".