20285873 has 8 divisors (see below), whose sum is σ = 21129216. Its totient is φ = 19454400.

The previous prime is 20285869. The next prime is 20285893. The reversal of 20285873 is 37858202.

It is a happy number.

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 20285873 - 2² = 20285869 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20285893) 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, 608 + ... + 6398.

It is an arithmetic number, because the mean of its divisors is an integer number (2641152).

Almost surely, 2^20285873 is an apocalyptic number.

It is an amenable number.

20285873 is a deficient number, since it is larger than the sum of its proper divisors (843343).

20285873 is a wasteful number, since it uses less digits than its factorization.

20285873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5935.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 20285873 is about 4503.9841251940. The cubic root of 20285873 is about 272.7289459931.

The spelling of 20285873 in words is "twenty million, two hundred eighty-five thousand, eight hundred seventy-three".