20473708 has 12 divisors (see below), whose sum is σ = 36436680. Its totient is φ = 10063232.

The previous prime is 20473669. The next prime is 20473709. The reversal of 20473708 is 80737402.

It is a self number, because there is not a number n which added to its sum of digits gives 20473708.

It is not an unprimeable number, because it can be changed into a prime (20473709) 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, 43141 + ... + 43612.

It is an arithmetic number, because the mean of its divisors is an integer number (3036390).

Almost surely, 2^20473708 is an apocalyptic number.

It is an amenable number.

20473708 is a deficient number, since it is larger than the sum of its proper divisors (15962972).

20473708 is a wasteful number, since it uses less digits than its factorization.

20473708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86816 (or 86814 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 20473708 is about 4524.7881718374. The cubic root of 20473708 is about 273.5681299300.

The spelling of 20473708 in words is "twenty million, four hundred seventy-three thousand, seven hundred eight".