20683672 has 8 divisors (see below), whose sum is σ = 38781900. Its totient is φ = 10341832.

The previous prime is 20683669. The next prime is 20683673. The reversal of 20683672 is 27638602.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20683673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1292722 + ... + 1292737.

Almost surely, 2^20683672 is an apocalyptic number.

It is an amenable number.

20683672 is a deficient number, since it is larger than the sum of its proper divisors (18098228).

20683672 is a wasteful number, since it uses less digits than its factorization.

20683672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2585465 (or 2585461 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 20683672 is about 4547.9305183787. The cubic root of 20683672 is about 274.5001255249.

The spelling of 20683672 in words is "twenty million, six hundred eighty-three thousand, six hundred seventy-two".