20573668 has 12 divisors (see below), whose sum is σ = 36263920. Its totient is φ = 10212552.

The previous prime is 20573647. The next prime is 20573669. The reversal of 20573668 is 86637502.

It is not an unprimeable number, because it can be changed into a prime (20573669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17946 + ... + 19057.

Almost surely, 2^20573668 is an apocalyptic number.

It is an amenable number.

20573668 is a deficient number, since it is larger than the sum of its proper divisors (15690252).

20573668 is a wasteful number, since it uses less digits than its factorization.

20573668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37146 (or 37144 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 20573668 is about 4535.8205431873. The cubic root of 20573668 is about 274.0126266226.

The spelling of 20573668 in words is "twenty million, five hundred seventy-three thousand, six hundred sixty-eight".