20063620 has 48 divisors (see below), whose sum is σ = 45581760. Its totient is φ = 7392384.

The previous prime is 20063611. The next prime is 20063623. The reversal of 20063620 is 2636002.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (20063623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13347 + ... + 14773.

It is an arithmetic number, because the mean of its divisors is an integer number (949620).

Almost surely, 2^20063620 is an apocalyptic number.

20063620 is a gapful number since it is divisible by the number (20) 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 20063620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22790880).

20063620 is an abundant number, since it is smaller than the sum of its proper divisors (25518140).

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

20063620 is a wasteful number, since it uses less digits than its factorization.

20063620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492 (or 1490 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 20063620 is about 4479.2432396556. The cubic root of 20063620 is about 271.7292757618.

Adding to 20063620 its reverse (2636002), we get a palindrome (22699622).

The spelling of 20063620 in words is "twenty million, sixty-three thousand, six hundred twenty".