20128608 has 48 divisors (see below), whose sum is σ = 58710960. Its totient is φ = 6709248.

The previous prime is 20128607. The next prime is 20128631. The reversal of 20128608 is 80682102.

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

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20128607) 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, 10785 + ... + 12512.

It is an arithmetic number, because the mean of its divisors is an integer number (1223145).

Almost surely, 2^20128608 is an apocalyptic number.

It is an amenable number.

20128608 is an abundant number, since it is smaller than the sum of its proper divisors (38582352).

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

20128608 is a wasteful number, since it uses less digits than its factorization.

20128608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23316 (or 23302 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 20128608 is about 4486.4917251679. The cubic root of 20128608 is about 272.0223453384.

It can be divided in two parts, 20128 and 608, that added together give a 4-th power (20736 = 12⁴).

The spelling of 20128608 in words is "twenty million, one hundred twenty-eight thousand, six hundred eight".