20020416 has 84 divisors (see below), whose sum is σ = 57451752. Its totient is φ = 6150144.

The previous prime is 20020387. The next prime is 20020421. The reversal of 20020416 is 61402002.

It is a junction number, because it is equal to n+sod(n) for n = 20020395 and 20020404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32140 + ... + 32756.

Almost surely, 2^20020416 is an apocalyptic number.

20020416 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20020416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28725876).

20020416 is an abundant number, since it is smaller than the sum of its proper divisors (37431336).

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

20020416 is a wasteful number, since it uses less digits than its factorization.

20020416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 20020416 is about 4474.4179509742. The cubic root of 20020416 is about 271.5340928328.

Adding to 20020416 its reverse (61402002), we get a palindrome (81422418).

The spelling of 20020416 in words is "twenty million, twenty thousand, four hundred sixteen".