30102785828 has 12 divisors (see below), whose sum is σ = 52702986252. Its totient is φ = 15044789760.

The previous prime is 30102785821. The next prime is 30102785851. The reversal of 30102785828 is 82858720103.

It can be written as a sum of positive squares in 2 ways, for example, as 23881993444 + 6220792384 = 154538^2 + 78872^2 .

It is not an unprimeable number, because it can be changed into a prime (30102785821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1640525 + ... + 1658772.

It is an arithmetic number, because the mean of its divisors is an integer number (4391915521).

Almost surely, 2^30102785828 is an apocalyptic number.

It is an amenable number.

30102785828 is a deficient number, since it is larger than the sum of its proper divisors (22600200424).

30102785828 is a wasteful number, since it uses less digits than its factorization.

30102785828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3301582 (or 3301580 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 44.

The spelling of 30102785828 in words is "thirty billion, one hundred two million, seven hundred eighty-five thousand, eight hundred twenty-eight".