20604768 has 48 divisors (see below), whose sum is σ = 54867456. Its totient is φ = 6769280.

The previous prime is 20604767. The next prime is 20604781. The reversal of 20604768 is 86740602.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20604767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5305 + ... + 8327.

It is an arithmetic number, because the mean of its divisors is an integer number (1143072).

Almost surely, 2^20604768 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 20604768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27433728).

20604768 is an abundant number, since it is smaller than the sum of its proper divisors (34262688).

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

20604768 is a wasteful number, since it uses less digits than its factorization.

20604768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3107 (or 3099 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 20604768 is about 4539.2475147319. The cubic root of 20604768 is about 274.1506266837.

The spelling of 20604768 in words is "twenty million, six hundred four thousand, seven hundred sixty-eight".