20004648 has 32 divisors (see below), whose sum is σ = 52954560. Its totient is φ = 6275840.

The previous prime is 20004583. The next prime is 20004667. The reversal of 20004648 is 84640002.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24108 + ... + 24923.

It is an arithmetic number, because the mean of its divisors is an integer number (1654830).

Almost surely, 2^20004648 is an apocalyptic number.

It is an amenable number.

20004648 is an abundant number, since it is smaller than the sum of its proper divisors (32949912).

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

20004648 is a wasteful number, since it uses less digits than its factorization.

20004648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49057 (or 49053 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 20004648 is about 4472.6555870087. The cubic root of 20004648 is about 271.4627877192.

The spelling of 20004648 in words is "twenty million, four thousand, six hundred forty-eight".