30111200 has 144 divisors (see below), whose sum is σ = 88744320. Its totient is φ = 9745920.

The previous prime is 30111197. The next prime is 30111217. The reversal of 30111200 is 211103.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106259 + ... + 106541.

It is an arithmetic number, because the mean of its divisors is an integer number (616280).

Almost surely, 2^30111200 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 30111200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44372160).

30111200 is an abundant number, since it is smaller than the sum of its proper divisors (58633120).

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

30111200 is a wasteful number, since it uses less digits than its factorization.

30111200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 316 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 30111200 is about 5487.3673104687. The cubic root of 30111200 is about 311.1066930590.

Adding to 30111200 its reverse (211103), we get a palindrome (30322303).

The spelling of 30111200 in words is "thirty million, one hundred eleven thousand, two hundred".