30109200 has 120 divisors (see below), whose sum is σ = 105264096. Its totient is φ = 7296000.

The previous prime is 30109147. The next prime is 30109201. The reversal of 30109200 is 290103.

30109200 = 248² + 249² + ... + 472².

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 30109200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30109201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12060 + ... + 14340.

Almost surely, 2^30109200 is an apocalyptic number.

30109200 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 30109200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52632048).

30109200 is an abundant number, since it is smaller than the sum of its proper divisors (75154896).

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

30109200 is a wasteful number, since it uses less digits than its factorization.

30109200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313 (or 2302 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 30109200 is about 5487.1850706897. The cubic root of 30109200 is about 311.0998049557.

Adding to 30109200 its reverse (290103), we get a palindrome (30399303).

The spelling of 30109200 in words is "thirty million, one hundred nine thousand, two hundred".