20285575 has 12 divisors (see below), whose sum is σ = 25298728. Its totient is φ = 16135200.

The previous prime is 20285567. The next prime is 20285579. The reversal of 20285575 is 57558202.

It is not a de Polignac number, because 20285575 - 2³ = 20285567 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20285575.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20285579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2284 + ... + 6766.

Almost surely, 2^20285575 is an apocalyptic number.

20285575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20285575 is a deficient number, since it is larger than the sum of its proper divisors (5013153).

20285575 is a wasteful number, since it uses less digits than its factorization.

20285575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4674 (or 4669 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 34.

The square root of 20285575 is about 4503.9510432508. The cubic root of 20285575 is about 272.7276105215.

The spelling of 20285575 in words is "twenty million, two hundred eighty-five thousand, five hundred seventy-five".