20403003000 has 64 divisors (see below), whose sum is σ = 63657378720. Its totient is φ = 5440800000.

The previous prime is 20403002993. The next prime is 20403003017. The reversal of 20403003000 is 30030402.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3397501 + ... + 3403500.

Almost surely, 2^20403003000 is an apocalyptic number.

20403003000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20403003000 is an abundant number, since it is smaller than the sum of its proper divisors (43254375720).

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

20403003000 is a wasteful number, since it uses less digits than its factorization.

20403003000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6801025 (or 6801011 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 12.

Adding to 20403003000 its reverse (30030402), we get a palindrome (20433033402).

The spelling of 20403003000 in words is "twenty billion, four hundred three million, three thousand".