19700285 has 16 divisors (see below), whose sum is σ = 26341632. Its totient is φ = 14020800.

The previous prime is 19700273. The next prime is 19700293. The reversal of 19700285 is 58200791.

It is not a de Polignac number, because 19700285 - 2²⁰ = 18651709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 1226 + ... + 6395.

It is an arithmetic number, because the mean of its divisors is an integer number (1646352).

Almost surely, 2^19700285 is an apocalyptic number.

It is an amenable number.

19700285 is a deficient number, since it is larger than the sum of its proper divisors (6641347).

19700285 is a wasteful number, since it uses less digits than its factorization.

19700285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7684.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 19700285 is about 4438.5003097893. The cubic root of 19700285 is about 270.0790120839.

The spelling of 19700285 in words is "nineteen million, seven hundred thousand, two hundred eighty-five".