20010620 has 48 divisors (see below), whose sum is σ = 49022400. Its totient is φ = 6858432.

The previous prime is 20010539. The next prime is 20010637. The reversal of 20010620 is 2601002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5402 + ... + 8318.

It is an arithmetic number, because the mean of its divisors is an integer number (1021300).

Almost surely, 2^20010620 is an apocalyptic number.

20010620 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 20010620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24511200).

20010620 is an abundant number, since it is smaller than the sum of its proper divisors (29011780).

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

20010620 is a wasteful number, since it uses less digits than its factorization.

20010620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2947 (or 2931 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 20010620 is about 4473.3231495165. The cubic root of 20010620 is about 271.4897983498.

Adding to 20010620 its reverse (2601002), we get a palindrome (22611622).

The spelling of 20010620 in words is "twenty million, ten thousand, six hundred twenty".