20055128 has 24 divisors (see below), whose sum is σ = 38131380. Its totient is φ = 9888480.

The previous prime is 20055097. The next prime is 20055131. The reversal of 20055128 is 82155002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 94943 + ... + 95153.

Almost surely, 2^20055128 is an apocalyptic number.

It is an amenable number.

20055128 is a deficient number, since it is larger than the sum of its proper divisors (18076252).

20055128 is a wasteful number, since it uses less digits than its factorization.

20055128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435 (or 322 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 20055128 is about 4478.2952113500. The cubic root of 20055128 is about 271.6909335510.

The spelling of 20055128 in words is "twenty million, fifty-five thousand, one hundred twenty-eight".