20020587 has 16 divisors (see below), whose sum is σ = 27565440. Its totient is φ = 12916800.

The previous prime is 20020579. The next prime is 20020597. The reversal of 20020587 is 78502002.

It is not a de Polignac number, because 20020587 - 2³ = 20020579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20020537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16512 + ... + 17682.

It is an arithmetic number, because the mean of its divisors is an integer number (1722840).

Almost surely, 2^20020587 is an apocalyptic number.

20020587 is a deficient number, since it is larger than the sum of its proper divisors (7544853).

20020587 is a wasteful number, since it uses less digits than its factorization.

20020587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 20020587 is about 4474.4370595640. The cubic root of 20020587 is about 271.5348659136.

Adding to 20020587 its reverse (78502002), we get a palindrome (98522589).

The spelling of 20020587 in words is "twenty million, twenty thousand, five hundred eighty-seven".