30275257780 has 36 divisors (see below), whose sum is σ = 67100386500. Its totient is φ = 11472726528.

The previous prime is 30275257777. The next prime is 30275257781. The reversal of 30275257780 is 8775257203.

It can be written as a sum of positive squares in 2 ways, for example, as 15983533476 + 14291724304 = 126426^2 + 119548^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30275257780.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30275257781) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2089405 + ... + 2103844.

It is an arithmetic number, because the mean of its divisors is an integer number (1863899625).

Almost surely, 2^30275257780 is an apocalyptic number.

It is an amenable number.

30275257780 is an abundant number, since it is smaller than the sum of its proper divisors (36825128720).

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

30275257780 is a wasteful number, since it uses less digits than its factorization.

30275257780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4193296 (or 4193275 counting only the distinct ones).

The product of its (nonzero) digits is 823200, while the sum is 46.

The spelling of 30275257780 in words is "thirty billion, two hundred seventy-five million, two hundred fifty-seven thousand, seven hundred eighty".