30228786912 has 96 divisors (see below), whose sum is σ = 84064780800. Its totient is φ = 9478289408.

The previous prime is 30228786911. The next prime is 30228786937. The reversal of 30228786912 is 21968782203.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×30228786912² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30228786911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3813289 + ... + 3821207.

It is an arithmetic number, because the mean of its divisors is an integer number (875674800).

Almost surely, 2^30228786912 is an apocalyptic number.

30228786912 is a gapful number since it is divisible by the number (32) 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 30228786912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42032390400).

30228786912 is an abundant number, since it is smaller than the sum of its proper divisors (53835993888).

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

30228786912 is a wasteful number, since it uses less digits than its factorization.

30228786912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10288 (or 10280 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 30228786912 in words is "thirty billion, two hundred twenty-eight million, seven hundred eighty-six thousand, nine hundred twelve".