20056128 has 28 divisors (see below), whose sum is σ = 53065680. Its totient is φ = 6685312.

The previous prime is 20056123. The next prime is 20056147. The reversal of 20056128 is 82165002.

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

It is a junction number, because it is equal to n+sod(n) for n = 20056098 and 20056107.

It is not an unprimeable number, because it can be changed into a prime (20056123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52038 + ... + 52421.

Almost surely, 2^20056128 is an apocalyptic number.

It is an amenable number.

20056128 is an abundant number, since it is smaller than the sum of its proper divisors (33009552).

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

20056128 is a wasteful number, since it uses less digits than its factorization.

20056128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104474 (or 104464 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 20056128 is about 4478.4068595875. The cubic root of 20056128 is about 271.6954492110.

The spelling of 20056128 in words is "twenty million, fifty-six thousand, one hundred twenty-eight".