30440043400 has 72 divisors (see below), whose sum is σ = 76636046430. Its totient is φ = 11239388160.

The previous prime is 30440043371. The next prime is 30440043419. The reversal of 30440043400 is 434004403.

It is a happy number.

It can be written as a sum of positive squares in 9 ways, for example, as 1385477284 + 29054566116 = 37222^2 + 170454^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 416497 + ... + 484096.

Almost surely, 2^30440043400 is an apocalyptic number.

It is an amenable number.

30440043400 is an abundant number, since it is smaller than the sum of its proper divisors (46196003030).

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

30440043400 is a wasteful number, since it uses less digits than its factorization.

30440043400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900635 (or 900613 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

Adding to 30440043400 its reverse (434004403), we get a palindrome (30874047803).

The spelling of 30440043400 in words is "thirty billion, four hundred forty million, forty-three thousand, four hundred".