20016087 has 32 divisors (see below), whose sum is σ = 33126912. Its totient is φ = 10468224.

The previous prime is 20016067. The next prime is 20016103. The reversal of 20016087 is 78061002.

It is not a de Polignac number, because 20016087 - 2²² = 15821783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20016067) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42628 + ... + 43094.

It is an arithmetic number, because the mean of its divisors is an integer number (1035216).

Almost surely, 2^20016087 is an apocalyptic number.

20016087 is a deficient number, since it is larger than the sum of its proper divisors (13110825).

20016087 is a wasteful number, since it uses less digits than its factorization.

20016087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 20016087 is about 4473.9341747505. The cubic root of 20016087 is about 271.5145202155.

Adding to 20016087 its reverse (78061002), we get a palindrome (98077089).

The spelling of 20016087 in words is "twenty million, sixteen thousand, eighty-seven".