30030815620 has 24 divisors (see below), whose sum is σ = 67915845144. Its totient is φ = 11088301056.

The previous prime is 30030815609. The next prime is 30030815621. The reversal of 30030815620 is 2651803003.

It can be written as a sum of positive squares in 4 ways, for example, as 5184 + 30030810436 = 72^2 + 173294^2 .

It is not an unprimeable number, because it can be changed into a prime (30030815621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57751309 + ... + 57751828.

It is an arithmetic number, because the mean of its divisors is an integer number (2829826881).

Almost surely, 2^30030815620 is an apocalyptic number.

It is an amenable number.

30030815620 is an abundant number, since it is smaller than the sum of its proper divisors (37885029524).

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

30030815620 is a wasteful number, since it uses less digits than its factorization.

30030815620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115503159 (or 115503157 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

It can be divided in two parts, 30030 and 815620, that added together give a triangular number (845650 = T₁₃₀₀).

The spelling of 30030815620 in words is "thirty billion, thirty million, eight hundred fifteen thousand, six hundred twenty".