20043352400 has 60 divisors (see below), whose sum is σ = 48580406652. Its totient is φ = 7946373120.

The previous prime is 20043352391. The next prime is 20043352409. The reversal of 20043352400 is 425334002.

It is an interprime number because it is at equal distance from previous prime (20043352391) and next prime (20043352409).

It can be written as a sum of positive squares in 6 ways, for example, as 5375235856 + 14668116544 = 73316^2 + 121112^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20043352409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 176519 + ... + 266918.

Almost surely, 2^20043352400 is an apocalyptic number.

20043352400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20043352400 is an abundant number, since it is smaller than the sum of its proper divisors (28537054252).

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

20043352400 is a wasteful number, since it uses less digits than its factorization.

20043352400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443568 (or 443557 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

Adding to 20043352400 its reverse (425334002), we get a palindrome (20468686402).

The spelling of 20043352400 in words is "twenty billion, forty-three million, three hundred fifty-two thousand, four hundred".