30403445240 has 128 divisors (see below), whose sum is σ = 79252992000. Its totient is φ = 10281835008.

The previous prime is 30403445209. The next prime is 30403445257. The reversal of 30403445240 is 4254430403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7756001 + ... + 7759919.

It is an arithmetic number, because the mean of its divisors is an integer number (619164000).

Almost surely, 2^30403445240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30403445240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39626496000).

30403445240 is an abundant number, since it is smaller than the sum of its proper divisors (48849546760).

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

30403445240 is a wasteful number, since it uses less digits than its factorization.

30403445240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4309 (or 4305 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 29.

Adding to 30403445240 its reverse (4254430403), we get a palindrome (34657875643).

The spelling of 30403445240 in words is "thirty billion, four hundred three million, four hundred forty-five thousand, two hundred forty".