30012100 has 72 divisors (see below), whose sum is σ = 68745600. Its totient is φ = 11356800.

The previous prime is 30012029. The next prime is 30012107. The reversal of 30012100 is 121003.

It is a super-2 number, since 2×30012100² = 1801452292820000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30012107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 229035 + ... + 229165.

It is an arithmetic number, because the mean of its divisors is an integer number (954800).

Almost surely, 2^30012100 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 30012100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34372800).

30012100 is an abundant number, since it is smaller than the sum of its proper divisors (38733500).

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

30012100 is a wasteful number, since it uses less digits than its factorization.

30012100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253 (or 246 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 30012100 is about 5478.3300375206. The cubic root of 30012100 is about 310.7650199950.

Adding to 30012100 its reverse (121003), we get a palindrome (30133103).

The spelling of 30012100 in words is "thirty million, twelve thousand, one hundred".