30305555240 has 64 divisors (see below), whose sum is σ = 73276228800. Its totient is φ = 11238847488.

The previous prime is 30305555233. The next prime is 30305555243. The reversal of 30305555240 is 4255550303.

It is a junction number, because it is equal to n+sod(n) for n = 30305555197 and 30305555206.

It is not an unprimeable number, because it can be changed into a prime (30305555243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287030 + ... + 378149.

It is an arithmetic number, because the mean of its divisors is an integer number (1144941075).

Almost surely, 2^30305555240 is an apocalyptic number.

It is an amenable number.

30305555240 is an abundant number, since it is smaller than the sum of its proper divisors (42970673560).

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

30305555240 is a wasteful number, since it uses less digits than its factorization.

30305555240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665274 (or 665270 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 32.

The spelling of 30305555240 in words is "thirty billion, three hundred five million, five hundred fifty-five thousand, two hundred forty".