20060287 has 4 divisors (see below), whose sum is σ = 21603400. Its totient is φ = 18517176.

The previous prime is 20060281. The next prime is 20060291. The reversal of 20060287 is 78206002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20060287 is a prime.

It is a super-2 number, since 2×20060287² = 804830229044738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20060281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 771537 + ... + 771562.

It is an arithmetic number, because the mean of its divisors is an integer number (5400850).

Almost surely, 2^20060287 is an apocalyptic number.

20060287 is a deficient number, since it is larger than the sum of its proper divisors (1543113).

20060287 is a wasteful number, since it uses less digits than its factorization.

20060287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543112.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 20060287 is about 4478.8711747493. The cubic root of 20060287 is about 271.7142282308.

Adding to 20060287 its reverse (78206002), we get a palindrome (98266289).

The spelling of 20060287 in words is "twenty million, sixty thousand, two hundred eighty-seven".