30440442402 has 24 divisors (see below), whose sum is σ = 66143286300. Its totient is φ = 10117738080.

The previous prime is 30440442391. The next prime is 30440442407. The reversal of 30440442402 is 20424404403.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 29377617201 + 1062825201 = 171399^2 + 32601^2 .

It is not an unprimeable number, because it can be changed into a prime (30440442407) 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, 2416549 + ... + 2429112.

Almost surely, 2^30440442402 is an apocalyptic number.

30440442402 is an abundant number, since it is smaller than the sum of its proper divisors (35702843898).

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

30440442402 is a wasteful number, since it uses less digits than its factorization.

30440442402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4846018 (or 4846015 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 30440442402 its reverse (20424404403), we get a palindrome (50864846805).

The spelling of 30440442402 in words is "thirty billion, four hundred forty million, four hundred forty-two thousand, four hundred two".