20039748 has 12 divisors (see below), whose sum is σ = 46759440. Its totient is φ = 6679912.

The previous prime is 20039743. The next prime is 20039771. The reversal of 20039748 is 84793002.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (20039743) 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, 834978 + ... + 835001.

It is an arithmetic number, because the mean of its divisors is an integer number (3896620).

Almost surely, 2^20039748 is an apocalyptic number.

It is an amenable number.

20039748 is an abundant number, since it is smaller than the sum of its proper divisors (26719692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20039748 is a wasteful number, since it uses less digits than its factorization.

20039748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669986 (or 1669984 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 20039748 is about 4476.5777107071. The cubic root of 20039748 is about 271.6214637844.

The spelling of 20039748 in words is "twenty million, thirty-nine thousand, seven hundred forty-eight".