20403314400 has 144 divisors (see below), whose sum is σ = 75900392064. Its totient is φ = 4663610880.

The previous prime is 20403314387. The next prime is 20403314401. The reversal of 20403314400 is 441330402.

It is a super-3 number, since 3×20403314400³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20403314401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 590442 + ... + 624041.

It is an arithmetic number, because the mean of its divisors is an integer number (527086056).

Almost surely, 2^20403314400 is an apocalyptic number.

20403314400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20403314400 is an abundant number, since it is smaller than the sum of its proper divisors (55497077664).

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

20403314400 is a wasteful number, since it uses less digits than its factorization.

20403314400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214513 (or 1214500 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20403314400 its reverse (441330402), we get a palindrome (20844644802).

The spelling of 20403314400 in words is "twenty billion, four hundred three million, three hundred fourteen thousand, four hundred".