20203023220 has 24 divisors (see below), whose sum is σ = 43059580704. Its totient is φ = 7960593696.

The previous prime is 20203023103. The next prime is 20203023259. The reversal of 20203023220 is 2232030202.

It is a junction number, because it is equal to n+sod(n) for n = 20203023194 and 20203023203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7537102 + ... + 7539781.

It is an arithmetic number, because the mean of its divisors is an integer number (1794149196).

Almost surely, 2^20203023220 is an apocalyptic number.

20203023220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20203023220 is an abundant number, since it is smaller than the sum of its proper divisors (22856557484).

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

20203023220 is a wasteful number, since it uses less digits than its factorization.

20203023220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15076959 (or 15076957 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

Adding to 20203023220 its reverse (2232030202), we get a palindrome (22435053422).

The spelling of 20203023220 in words is "twenty billion, two hundred three million, twenty-three thousand, two hundred twenty".