20000620 has 24 divisors (see below), whose sum is σ = 43027488. Its totient is φ = 7804800.

The previous prime is 20000599. The next prime is 20000621. The reversal of 20000620 is 2600002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 20000597 and 20000606.

It is not an unprimeable number, because it can be changed into a prime (20000621) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 11376 + ... + 13015.

It is an arithmetic number, because the mean of its divisors is an integer number (1792812).

Almost surely, 2^20000620 is an apocalyptic number.

20000620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20000620 is an abundant number, since it is smaller than the sum of its proper divisors (23026868).

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

20000620 is a wasteful number, since it uses less digits than its factorization.

20000620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24441 (or 24439 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 20000620 is about 4472.2052725697. The cubic root of 20000620 is about 271.4445665287. Note that the first 3 decimals are identical.

Adding to 20000620 its reverse (2600002), we get a palindrome (22600622).

The spelling of 20000620 in words is "twenty million, six hundred twenty", and thus it is an aban number.