20752104 has 64 divisors (see below), whose sum is σ = 57844800. Its totient is φ = 6165504.

The previous prime is 20752091. The next prime is 20752133. The reversal of 20752104 is 40125702.

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 15 ways as a sum of consecutive naturals, for example, 6414 + ... + 9090.

It is an arithmetic number, because the mean of its divisors is an integer number (903825).

Almost surely, 2^20752104 is an apocalyptic number.

20752104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20752104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28922400).

20752104 is an abundant number, since it is smaller than the sum of its proper divisors (37092696).

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

20752104 is a wasteful number, since it uses less digits than its factorization.

20752104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2722 (or 2718 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 20752104 is about 4555.4477277212. The cubic root of 20752104 is about 274.8025204814.

Adding to 20752104 its reverse (40125702), we get a palindrome (60877806).

The spelling of 20752104 in words is "twenty million, seven hundred fifty-two thousand, one hundred four".