20016312 has 16 divisors (see below), whose sum is σ = 50040840. Its totient is φ = 6672096.

The previous prime is 20016287. The next prime is 20016319. The reversal of 20016312 is 21361002.

It is a junction number, because it is equal to n+sod(n) for n = 20016291 and 20016300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20016319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416983 + ... + 417030.

Almost surely, 2^20016312 is an apocalyptic number.

It is an amenable number.

20016312 is an abundant number, since it is smaller than the sum of its proper divisors (30024528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20016312 is a wasteful number, since it uses less digits than its factorization.

20016312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834022 (or 834018 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 20016312 is about 4473.9593203336. The cubic root of 20016312 is about 271.5155375728.

Adding to 20016312 its reverse (21361002), we get a palindrome (41377314).

The spelling of 20016312 in words is "twenty million, sixteen thousand, three hundred twelve".