30111380 has 48 divisors (see below), whose sum is σ = 68584320. Its totient is φ = 11038848.

The previous prime is 30111379. The next prime is 30111383. The reversal of 30111380 is 8311103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30111383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46217 + ... + 46863.

It is an arithmetic number, because the mean of its divisors is an integer number (1428840).

Almost surely, 2^30111380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30111380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34292160).

30111380 is an abundant number, since it is smaller than the sum of its proper divisors (38472940).

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

30111380 is a wasteful number, since it uses less digits than its factorization.

30111380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848 (or 846 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 30111380 is about 5487.3837117519. The cubic root of 30111380 is about 311.1073129733.

Adding to 30111380 its reverse (8311103), we get a palindrome (38422483).

The spelling of 30111380 in words is "thirty million, one hundred eleven thousand, three hundred eighty".