20055385 has 16 divisors (see below), whose sum is σ = 28454400. Its totient is φ = 13277376.

The previous prime is 20055377. The next prime is 20055391. The reversal of 20055385 is 58355002.

It is not a de Polignac number, because 20055385 - 2³ = 20055377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8865 + ... + 10894.

It is an arithmetic number, because the mean of its divisors is an integer number (1778400).

Almost surely, 2^20055385 is an apocalyptic number.

It is an amenable number.

20055385 is a deficient number, since it is larger than the sum of its proper divisors (8399015).

20055385 is a wasteful number, since it uses less digits than its factorization.

20055385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19800.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 20055385 is about 4478.3239052128. The cubic root of 20055385 is about 271.6920940900.

The spelling of 20055385 in words is "twenty million, fifty-five thousand, three hundred eighty-five".