20030648 has 64 divisors (see below), whose sum is σ = 43545600. Its totient is φ = 8552320.

The previous prime is 20030629. The next prime is 20030657. The reversal of 20030648 is 84603002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 119861 + ... + 120027.

It is an arithmetic number, because the mean of its divisors is an integer number (680400).

Almost surely, 2^20030648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20030648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21772800).

20030648 is an abundant number, since it is smaller than the sum of its proper divisors (23514952).

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

20030648 is a wasteful number, since it uses less digits than its factorization.

20030648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 20030648 is about 4475.5611938616. The cubic root of 20030648 is about 271.5803433479.

The spelling of 20030648 in words is "twenty million, thirty thousand, six hundred forty-eight".