30236479920 has 960 divisors, whose sum is σ = 118552412160. Its totient is φ = 6867763200.

The previous prime is 30236479919. The next prime is 30236479927. The reversal of 30236479920 is 2997463203.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (30236479927) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 643329337 + ... + 643329383.

It is an arithmetic number, because the mean of its divisors is an integer number (123492096).

Almost surely, 2^30236479920 is an apocalyptic number.

30236479920 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 30236479920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59276206080).

30236479920 is an abundant number, since it is smaller than the sum of its proper divisors (88315932240).

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

30236479920 is a wasteful number, since it uses less digits than its factorization.

30236479920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 45.

The spelling of 30236479920 in words is "thirty billion, two hundred thirty-six million, four hundred seventy-nine thousand, nine hundred twenty".