20049916 has 12 divisors (see below), whose sum is σ = 35340760. Its totient is φ = 9952560.

The previous prime is 20049889. The next prime is 20049917. The reversal of 20049916 is 61994002.

It is a happy number.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20049917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17475 + ... + 18586.

Almost surely, 2^20049916 is an apocalyptic number.

It is an amenable number.

20049916 is a deficient number, since it is larger than the sum of its proper divisors (15290844).

20049916 is a wasteful number, since it uses less digits than its factorization.

20049916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36204 (or 36202 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 20049916 is about 4477.7132556697. The cubic root of 20049916 is about 271.6673955007.

The spelling of 20049916 in words is "twenty million, forty-nine thousand, nine hundred sixteen".