20203028940 has 24 divisors (see below), whose sum is σ = 56568481200. Its totient is φ = 5387474368.

The previous prime is 20203028893. The next prime is 20203028957. The reversal of 20203028940 is 4982030202.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 20203028898 and 20203028907.

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, 168358515 + ... + 168358634.

It is an arithmetic number, because the mean of its divisors is an integer number (2357020050).

Almost surely, 2^20203028940 is an apocalyptic number.

20203028940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20203028940 is an abundant number, since it is smaller than the sum of its proper divisors (36365452260).

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

20203028940 is a wasteful number, since it uses less digits than its factorization.

20203028940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336717161 (or 336717159 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The spelling of 20203028940 in words is "twenty billion, two hundred three million, twenty-eight thousand, nine hundred forty".