30820825950 has 48 divisors (see below), whose sum is σ = 76487604480. Its totient is φ = 8213300320.

The previous prime is 30820825949. The next prime is 30820825957. The reversal of 30820825950 is 5952802803.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30820825957) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 153961 + ... + 292139.

It is an arithmetic number, because the mean of its divisors is an integer number (1593491760).

Almost surely, 2^30820825950 is an apocalyptic number.

30820825950 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30820825950 is an abundant number, since it is smaller than the sum of its proper divisors (45666778530).

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

30820825950 is a wasteful number, since it uses less digits than its factorization.

30820825950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139681 (or 139676 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 42.

The spelling of 30820825950 in words is "thirty billion, eight hundred twenty million, eight hundred twenty-five thousand, nine hundred fifty".