20249704 has 16 divisors (see below), whose sum is σ = 38221920. Its totient is φ = 10057200.

The previous prime is 20249699. The next prime is 20249717. The reversal of 20249704 is 40794202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7174 + ... + 9589.

It is an arithmetic number, because the mean of its divisors is an integer number (2388870).

Almost surely, 2^20249704 is an apocalyptic number.

It is an amenable number.

20249704 is a deficient number, since it is larger than the sum of its proper divisors (17972216).

20249704 is a wasteful number, since it uses less digits than its factorization.

20249704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16920 (or 16916 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 20249704 is about 4499.9671109909. The cubic root of 20249704 is about 272.5667608500.

The spelling of 20249704 in words is "twenty million, two hundred forty-nine thousand, seven hundred four".