20106087 has 16 divisors (see below), whose sum is σ = 28512000. Its totient is φ = 12559232.

The previous prime is 20106061. The next prime is 20106089. The reversal of 20106087 is 78060102.

It is a cyclic number.

It is not a de Polignac number, because 20106087 - 2¹⁶ = 20040551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20106089) 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, 12664 + ... + 14162.

It is an arithmetic number, because the mean of its divisors is an integer number (1782000).

Almost surely, 2^20106087 is an apocalyptic number.

20106087 is a deficient number, since it is larger than the sum of its proper divisors (8405913).

20106087 is a wasteful number, since it uses less digits than its factorization.

20106087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782.

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

The square root of 20106087 is about 4483.9811551790. The cubic root of 20106087 is about 271.9208562630.

Adding to 20106087 its reverse (78060102), we get a palindrome (98166189).

The spelling of 20106087 in words is "twenty million, one hundred six thousand, eighty-seven".