20103020 has 24 divisors (see below), whose sum is σ = 48247584. Its totient is φ = 6892416.

The previous prime is 20102983. The next prime is 20103047. The reversal of 20103020 is 2030102.

It is a junction number, because it is equal to n+sod(n) for n = 20102989 and 20103007.

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, 71657 + ... + 71936.

It is an arithmetic number, because the mean of its divisors is an integer number (2010316).

Almost surely, 2^20103020 is an apocalyptic number.

20103020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20103020 is an abundant number, since it is smaller than the sum of its proper divisors (28144564).

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

20103020 is a wasteful number, since it uses less digits than its factorization.

20103020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143609 (or 143607 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 20103020 is about 4483.6391469430. The cubic root of 20103020 is about 271.9070292120.

Adding to 20103020 its reverse (2030102), we get a palindrome (22133122).

The spelling of 20103020 in words is "twenty million, one hundred three thousand, twenty".