22030400320 has 28 divisors (see below), whose sum is σ = 52459891524. Its totient is φ = 8812160000.

The previous prime is 22030400309. The next prime is 22030400321. The reversal of 22030400320 is 2300403022.

It can be written as a sum of positive squares in 2 ways, for example, as 10170319104 + 11860081216 = 100848^2 + 108904^2 .

It is a super-2 number, since 2×22030400320² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 22030400294 and 22030400303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22030400321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34422181 + ... + 34422820.

Almost surely, 2^22030400320 is an apocalyptic number.

22030400320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22030400320 is an abundant number, since it is smaller than the sum of its proper divisors (30429491204).

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

22030400320 is an equidigital number, since it uses as much as digits as its factorization.

22030400320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68845018 (or 68845008 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

Adding to 22030400320 its reverse (2300403022), we get a palindrome (24330803342).

The spelling of 22030400320 in words is "twenty-two billion, thirty million, four hundred thousand, three hundred twenty".