20049866 has 8 divisors (see below), whose sum is σ = 30206820. Its totient is φ = 9980928.

The previous prime is 20049833. The next prime is 20049881. The reversal of 20049866 is 66894002.

It can be written as a sum of positive squares in 2 ways, for example, as 19989841 + 60025 = 4471^2 + 245^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon 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, 21431 + ... + 22346.

Almost surely, 2^20049866 is an apocalyptic number.

20049866 is a deficient number, since it is larger than the sum of its proper divisors (10156954).

20049866 is a wasteful number, since it uses less digits than its factorization.

20049866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44008.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 20049866 is about 4477.7076724592. The cubic root of 20049866 is about 271.6671696747.

The spelling of 20049866 in words is "twenty million, forty-nine thousand, eight hundred sixty-six".