30112680 has 128 divisors (see below), whose sum is σ = 98784000. Its totient is φ = 7299072.

The previous prime is 30112657. The next prime is 30112697. The reversal of 30112680 is 8621103.

30112680 is a nontrivial binomial coefficient, being equal to C(7761, 2).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151221 + ... + 151419.

It is an arithmetic number, because the mean of its divisors is an integer number (771750).

Almost surely, 2^30112680 is an apocalyptic number.

30112680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30112680 is the 7760-th triangular number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30112680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49392000).

30112680 is an abundant number, since it is smaller than the sum of its proper divisors (68671320).

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

30112680 is a wasteful number, since it uses less digits than its factorization.

30112680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 30112680 is about 5487.5021640087. The cubic root of 30112680 is about 311.1117900590. Note that the first 3 decimals are identical.

Adding to 30112680 its reverse (8621103), we get a palindrome (38733783).

The spelling of 30112680 in words is "thirty million, one hundred twelve thousand, six hundred eighty".