20057285 has 8 divisors (see below), whose sum is σ = 24105600. Its totient is φ = 16021264.

The previous prime is 20057281. The next prime is 20057291. The reversal of 20057285 is 58275002.

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 20057285 - 2² = 20057281 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20057281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1016 + ... + 6414.

It is an arithmetic number, because the mean of its divisors is an integer number (3013200).

Almost surely, 2^20057285 is an apocalyptic number.

It is an amenable number.

20057285 is a deficient number, since it is larger than the sum of its proper divisors (4048315).

20057285 is an equidigital number, since it uses as much as digits as its factorization.

20057285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6147.

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 20057285 is about 4478.5360331251. The cubic root of 20057285 is about 271.7006736423.

The spelling of 20057285 in words is "twenty million, fifty-seven thousand, two hundred eighty-five".