20396603400 has 96 divisors (see below), whose sum is σ = 66948884640. Its totient is φ = 5119144960.

The previous prime is 20396603393. The next prime is 20396603407. The reversal of 20396603400 is 430669302.

It is an interprime number because it is at equal distance from previous prime (20396603393) and next prime (20396603407).

It is not an unprimeable number, because it can be changed into a prime (20396603407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 989634 + ... + 1010033.

It is an arithmetic number, because the mean of its divisors is an integer number (697384215).

Almost surely, 2^20396603400 is an apocalyptic number.

20396603400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20396603400 is an abundant number, since it is smaller than the sum of its proper divisors (46552281240).

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

20396603400 is a wasteful number, since it uses less digits than its factorization.

20396603400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1999703 (or 1999694 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 33.

The spelling of 20396603400 in words is "twenty billion, three hundred ninety-six million, six hundred three thousand, four hundred".