20087873 has 8 divisors (see below), whose sum is σ = 21956928. Its totient is φ = 18265104.

The previous prime is 20087869. The next prime is 20087927. The reversal of 20087873 is 37878002.

It is a happy number.

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

It is not a de Polignac number, because 20087873 - 2² = 20087869 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20087813) 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, 10661 + ... + 12402.

It is an arithmetic number, because the mean of its divisors is an integer number (2744616).

Almost surely, 2^20087873 is an apocalyptic number.

It is an amenable number.

20087873 is a deficient number, since it is larger than the sum of its proper divisors (1869055).

20087873 is a wasteful number, since it uses less digits than its factorization.

20087873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23143.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 20087873 is about 4481.9496873571. The cubic root of 20087873 is about 271.8387208913.

The spelling of 20087873 in words is "twenty million, eighty-seven thousand, eight hundred seventy-three".