30428615844 has 135 divisors (see below), whose sum is σ = 87534670993. Its totient is φ = 9210326400.

The previous prime is 30428615837. The next prime is 30428615879. The reversal of 30428615844 is 44851682403.

The square root of 30428615844 is 174438.

It is a perfect power (a square), and thus also a powerful number.

30428615844 is a `hidden beast` number, since 3 + 0 + 4 + 2 + 8 + 61 + 584 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5338055844 + 25090560000 = 73062^2 + 158400^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30428615844.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 34538284 + ... + 34539164.

Almost surely, 2^30428615844 is an apocalyptic number.

30428615844 is the 174438-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30428615844

30428615844 is an abundant number, since it is smaller than the sum of its proper divisors (57106055149).

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

30428615844 is an equidigital number, since it uses as much as digits as its factorization.

30428615844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800 (or 897 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 45.

The spelling of 30428615844 in words is "thirty billion, four hundred twenty-eight million, six hundred fifteen thousand, eight hundred forty-four".