20403011200 has 192 divisors, whose sum is σ = 59214647520. Its totient is φ = 6848409600.

The previous prime is 20403011197. The next prime is 20403011203. The reversal of 20403011200 is 211030402.

It is an interprime number because it is at equal distance from previous prime (20403011197) and next prime (20403011203).

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (20403011203) 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 23 ways as a sum of consecutive naturals, for example, 435307 + ... + 479893.

Almost surely, 2^20403011200 is an apocalyptic number.

20403011200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20403011200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29607323760).

20403011200 is an abundant number, since it is smaller than the sum of its proper divisors (38811636320).

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

20403011200 is a wasteful number, since it uses less digits than its factorization.

20403011200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44635 (or 44618 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 20403011200 its reverse (211030402), we get a palindrome (20614041602).

The spelling of 20403011200 in words is "twenty billion, four hundred three million, eleven thousand, two hundred".