20016867 has 16 divisors (see below), whose sum is σ = 28921760. Its totient is φ = 12314016.

The previous prime is 20016847. The next prime is 20016883. The reversal of 20016867 is 76861002.

It is a happy number.

It is not a de Polignac number, because 20016867 - 2⁸ = 20016611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20016827) 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, 5073 + ... + 8109.

It is an arithmetic number, because the mean of its divisors is an integer number (1807610).

Almost surely, 2^20016867 is an apocalyptic number.

20016867 is a deficient number, since it is larger than the sum of its proper divisors (8904893).

20016867 is an equidigital number, since it uses as much as digits as its factorization.

20016867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3079 (or 3053 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 20016867 is about 4474.0213455012. The cubic root of 20016867 is about 271.5180470217.

Adding to 20016867 its reverse (76861002), we get a palindrome (96877869).

The spelling of 20016867 in words is "twenty million, sixteen thousand, eight hundred sixty-seven".