30055236720 has 80 divisors (see below), whose sum is σ = 93319360512. Its totient is φ = 8001987840.

The previous prime is 30055236719. The next prime is 30055236733. The reversal of 30055236720 is 2763255003.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-3 number, since 3×30055236720³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52209 + ... + 250671.

Almost surely, 2^30055236720 is an apocalyptic number.

30055236720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30055236720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46659680256).

30055236720 is an abundant number, since it is smaller than the sum of its proper divisors (63264123792).

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

30055236720 is a wasteful number, since it uses less digits than its factorization.

30055236720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199110 (or 199104 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 33.

The spelling of 30055236720 in words is "thirty billion, fifty-five million, two hundred thirty-six thousand, seven hundred twenty".