30138589320 has 128 divisors (see below), whose sum is σ = 103626051840. Its totient is φ = 6869237760.

The previous prime is 30138589303. The next prime is 30138589333. The reversal of 30138589320 is 2398583103.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 245700 + ... + 347340.

It is an arithmetic number, because the mean of its divisors is an integer number (809578530).

Almost surely, 2^30138589320 is an apocalyptic number.

30138589320 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 30138589320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51813025920).

30138589320 is an abundant number, since it is smaller than the sum of its proper divisors (73487462520).

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

30138589320 is a wasteful number, since it uses less digits than its factorization.

30138589320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102015 (or 102011 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 30138589320 in words is "thirty billion, one hundred thirty-eight million, five hundred eighty-nine thousand, three hundred twenty".