30223145820 has 96 divisors (see below), whose sum is σ = 96868187136. Its totient is φ = 6897139200.

The previous prime is 30223145783. The next prime is 30223145833. The reversal of 30223145820 is 2854132203.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 208000 + ... + 322040.

It is an arithmetic number, because the mean of its divisors is an integer number (1009043616).

Almost surely, 2^30223145820 is an apocalyptic number.

30223145820 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 30223145820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48434093568).

30223145820 is an abundant number, since it is smaller than the sum of its proper divisors (66645041316).

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

30223145820 is a wasteful number, since it uses less digits than its factorization.

30223145820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114691 (or 114689 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The spelling of 30223145820 in words is "thirty billion, two hundred twenty-three million, one hundred forty-five thousand, eight hundred twenty".