20004048 has 30 divisors (see below), whose sum is σ = 55983954. Its totient is φ = 6667968.

The previous prime is 20004041. The next prime is 20004059. The reversal of 20004048 is 84040002.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11778624 + 8225424 = 3432^2 + 2868^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 20004048.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20004041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69315 + ... + 69602.

Almost surely, 2^20004048 is an apocalyptic number.

It is an amenable number.

20004048 is an abundant number, since it is smaller than the sum of its proper divisors (35979906).

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

20004048 is a wasteful number, since it uses less digits than its factorization.

20004048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138931 (or 138922 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 20004048 is about 4472.5885122600. The cubic root of 20004048 is about 271.4600736949.

The spelling of 20004048 in words is "twenty million, four thousand, forty-eight".