30858709140 has 144 divisors (see below), whose sum is σ = 107020472832. Its totient is φ = 7050544128.

The previous prime is 30858709129. The next prime is 30858709201. The reversal of 30858709140 is 4190785803.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5461797 + ... + 5467443.

It is an arithmetic number, because the mean of its divisors is an integer number (743197728).

Almost surely, 2^30858709140 is an apocalyptic number.

30858709140 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 30858709140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53510236416).

30858709140 is an abundant number, since it is smaller than the sum of its proper divisors (76161763692).

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

30858709140 is a wasteful number, since it uses less digits than its factorization.

30858709140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10006 (or 10001 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 30858709140 in words is "thirty billion, eight hundred fifty-eight million, seven hundred nine thousand, one hundred forty".