20485365 has 16 divisors (see below), whose sum is σ = 32913216. Its totient is φ = 10880000.

The previous prime is 20485321. The next prime is 20485369. The reversal of 20485365 is 56358402.

It is not a de Polignac number, because 20485365 - 2⁶ = 20485301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20485369) 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 15 ways as a sum of consecutive naturals, for example, 1045 + ... + 6485.

It is an arithmetic number, because the mean of its divisors is an integer number (2057076).

Almost surely, 2^20485365 is an apocalyptic number.

It is an amenable number.

20485365 is a deficient number, since it is larger than the sum of its proper divisors (12427851).

20485365 is a wasteful number, since it uses less digits than its factorization.

20485365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5700.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 20485365 is about 4526.0761151355. The cubic root of 20485365 is about 273.6200400620.

The spelling of 20485365 in words is "twenty million, four hundred eighty-five thousand, three hundred sixty-five".