20032987 has 8 divisors (see below), whose sum is σ = 22843296. Its totient is φ = 17404032.

The previous prime is 20032967. The next prime is 20033009. The reversal of 20032987 is 78923002.

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 20032987 - 2¹¹ = 20030939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20032907) 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, 45103 + ... + 45544.

It is an arithmetic number, because the mean of its divisors is an integer number (2855412).

Almost surely, 2^20032987 is an apocalyptic number.

20032987 is a deficient number, since it is larger than the sum of its proper divisors (2810309).

20032987 is a wasteful number, since it uses less digits than its factorization.

20032987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90677.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 20032987 is about 4475.8224942462. The cubic root of 20032987 is about 271.5909138447.

Adding to 20032987 its reverse (78923002), we get a palindrome (98955989).

The spelling of 20032987 in words is "twenty million, thirty-two thousand, nine hundred eighty-seven".