20385177 has 8 divisors (see below), whose sum is σ = 27552864. Its totient is φ = 13403808.

The previous prime is 20385143. The next prime is 20385179. The reversal of 20385177 is 77158302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20385177 - 2¹⁴ = 20368793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20385179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46323 + ... + 46760.

It is an arithmetic number, because the mean of its divisors is an integer number (3444108).

Almost surely, 2^20385177 is an apocalyptic number.

It is an amenable number.

20385177 is a deficient number, since it is larger than the sum of its proper divisors (7167687).

20385177 is an equidigital number, since it uses as much as digits as its factorization.

20385177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93159.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 20385177 is about 4514.9946843823. The cubic root of 20385177 is about 273.1732453737.

The spelling of 20385177 in words is "twenty million, three hundred eighty-five thousand, one hundred seventy-seven".