20012416 has 16 divisors (see below), whose sum is σ = 39868740. Its totient is φ = 10006144.

The previous prime is 20012411. The next prime is 20012423. The reversal of 20012416 is 61421002.

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a self number, because there is not a number n which added to its sum of digits gives 20012416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78046 + ... + 78301.

Almost surely, 2^20012416 is an apocalyptic number.

It is an amenable number.

20012416 is a deficient number, since it is larger than the sum of its proper divisors (19856324).

20012416 is an equidigital number, since it uses as much as digits as its factorization.

20012416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156361 (or 156349 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 20012416 is about 4473.5238906258. The cubic root of 20012416 is about 271.4979203885.

Adding to 20012416 its reverse (61421002), we get a palindrome (81433418).

The spelling of 20012416 in words is "twenty million, twelve thousand, four hundred sixteen".