20673912 has 32 divisors (see below), whose sum is σ = 59068800. Its totient is φ = 5906784.

The previous prime is 20673907. The next prime is 20673943. The reversal of 20673912 is 21937602.

It is a self number, because there is not a number n which added to its sum of digits gives 20673912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61362 + ... + 61697.

It is an arithmetic number, because the mean of its divisors is an integer number (1845900).

Almost surely, 2^20673912 is an apocalyptic number.

It is an amenable number.

20673912 is an abundant number, since it is smaller than the sum of its proper divisors (38394888).

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

20673912 is a wasteful number, since it uses less digits than its factorization.

20673912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123075 (or 123071 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 20673912 is about 4546.8573762545. The cubic root of 20673912 is about 274.4569426262.

The spelling of 20673912 in words is "twenty million, six hundred seventy-three thousand, nine hundred twelve".