20287416 has 16 divisors (see below), whose sum is σ = 50718600. Its totient is φ = 6762464.

The previous prime is 20287411. The next prime is 20287417. The reversal of 20287416 is 61478202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20287411) 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, 422631 + ... + 422678.

Almost surely, 2^20287416 is an apocalyptic number.

It is an amenable number.

20287416 is an abundant number, since it is smaller than the sum of its proper divisors (30431184).

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

20287416 is a wasteful number, since it uses less digits than its factorization.

20287416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845318 (or 845314 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 20287416 is about 4504.1554147254. The cubic root of 20287416 is about 272.7358606589.

The spelling of 20287416 in words is "twenty million, two hundred eighty-seven thousand, four hundred sixteen".