20473968 has 20 divisors (see below), whose sum is σ = 52891208. Its totient is φ = 6824640.

The previous prime is 20473949. The next prime is 20473993. The reversal of 20473968 is 86937402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213223 + ... + 213318.

Almost surely, 2^20473968 is an apocalyptic number.

It is an amenable number.

20473968 is an abundant number, since it is smaller than the sum of its proper divisors (32417240).

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

20473968 is a wasteful number, since it uses less digits than its factorization.

20473968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426552 (or 426546 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 20473968 is about 4524.8169023730. The cubic root of 20473968 is about 273.5692879586.

The spelling of 20473968 in words is "twenty million, four hundred seventy-three thousand, nine hundred sixty-eight".