20146285 has 8 divisors (see below), whose sum is σ = 24410880. Its totient is φ = 15960144.

The previous prime is 20146279. The next prime is 20146319. The reversal of 20146285 is 58264102.

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

It is a cyclic number.

It is not a de Polignac number, because 20146285 - 2³ = 20146277 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 19045 + ... + 20074.

It is an arithmetic number, because the mean of its divisors is an integer number (3051360).

Almost surely, 2^20146285 is an apocalyptic number.

It is an amenable number.

20146285 is a deficient number, since it is larger than the sum of its proper divisors (4264595).

20146285 is a wasteful number, since it uses less digits than its factorization.

20146285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39227.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 20146285 is about 4488.4613176455. The cubic root of 20146285 is about 272.1019523015.

The spelling of 20146285 in words is "twenty million, one hundred forty-six thousand, two hundred eighty-five".