20205416 has 32 divisors (see below), whose sum is σ = 47234880. Its totient is φ = 7872000.

The previous prime is 20205389. The next prime is 20205467. The reversal of 20205416 is 61450202.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15785 + ... + 17016.

It is an arithmetic number, because the mean of its divisors is an integer number (1476090).

Almost surely, 2^20205416 is an apocalyptic number.

It is an amenable number.

20205416 is an abundant number, since it is smaller than the sum of its proper divisors (27029464).

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

20205416 is a wasteful number, since it uses less digits than its factorization.

20205416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32825 (or 32821 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 20205416 is about 4495.0434925593. The cubic root of 20205416 is about 272.3679061265.

Adding to 20205416 its reverse (61450202), we get a palindrome (81655618).

The spelling of 20205416 in words is "twenty million, two hundred five thousand, four hundred sixteen".