30533552020 has 72 divisors (see below), whose sum is σ = 67109111496. Its totient is φ = 11668538112.

The previous prime is 30533551999. The next prime is 30533552057. The reversal of 30533552020 is 2025533503.

It can be written as a sum of positive squares in 4 ways, for example, as 10447292944 + 20086259076 = 102212^2 + 141726^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30533552020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15794974 + ... + 15796906.

It is an arithmetic number, because the mean of its divisors is an integer number (932070993).

Almost surely, 2^30533552020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30533552020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33554555748).

30533552020 is an abundant number, since it is smaller than the sum of its proper divisors (36575559476).

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

30533552020 is a wasteful number, since it uses less digits than its factorization.

30533552020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3481 (or 3456 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 28.

The spelling of 30533552020 in words is "thirty billion, five hundred thirty-three million, five hundred fifty-two thousand, twenty".