30334999920 has 640 divisors, whose sum is σ = 109690122240. Its totient is φ = 6888161280.

The previous prime is 30334999907. The next prime is 30334999921. The reversal of 30334999920 is 2999943303.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30334999921) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 193216482 + ... + 193216638.

It is an arithmetic number, because the mean of its divisors is an integer number (171390816).

Almost surely, 2^30334999920 is an apocalyptic number.

30334999920 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 30334999920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54845061120).

30334999920 is an abundant number, since it is smaller than the sum of its proper divisors (79355122320).

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

30334999920 is a wasteful number, since it uses less digits than its factorization.

30334999920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313 (or 307 counting only the distinct ones).

The product of its (nonzero) digits is 1417176, while the sum is 51.

The spelling of 30334999920 in words is "thirty billion, three hundred thirty-four million, nine hundred ninety-nine thousand, nine hundred twenty".