20016297 has 48 divisors (see below), whose sum is σ = 35156992. Its totient is φ = 10730880.

The previous prime is 20016287. The next prime is 20016319. The reversal of 20016297 is 79261002.

It is not a de Polignac number, because 20016297 - 2¹¹ = 20014249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20016297.

It is not an unprimeable number, because it can be changed into a prime (20016287) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 72123 + ... + 72399.

Almost surely, 2^20016297 is an apocalyptic number.

It is an amenable number.

20016297 is a deficient number, since it is larger than the sum of its proper divisors (15140695).

20016297 is a wasteful number, since it uses less digits than its factorization.

20016297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358 (or 355 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 20016297 is about 4473.9576439658. The cubic root of 20016297 is about 271.5154697493.

Adding to 20016297 its reverse (79261002), we get a palindrome (99277299).

The spelling of 20016297 in words is "twenty million, sixteen thousand, two hundred ninety-seven".