20087473 has 8 divisors (see below), whose sum is σ = 23697920. Its totient is φ = 16662240.

The previous prime is 20087467. The next prime is 20087479. The reversal of 20087473 is 37478002.

It is an interprime number because it is at equal distance from previous prime (20087467) and next prime (20087479).

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

It is a de Polignac number, because none of the positive numbers 2^k-20087473 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20087479) 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, 46068 + ... + 46501.

It is an arithmetic number, because the mean of its divisors is an integer number (2962240).

Almost surely, 2^20087473 is an apocalyptic number.

It is an amenable number.

20087473 is a deficient number, since it is larger than the sum of its proper divisors (3610447).

20087473 is an equidigital number, since it uses as much as digits as its factorization.

20087473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92607.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 20087473 is about 4481.9050636978. The cubic root of 20087473 is about 271.8369165488.

The spelling of 20087473 in words is "twenty million, eighty-seven thousand, four hundred seventy-three".