30720360 has 192 divisors, whose sum is σ = 109408320. Its totient is φ = 6819840.

The previous prime is 30720331. The next prime is 30720401. The reversal of 30720360 is 6302703.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 830262 + ... + 830298.

It is an arithmetic number, because the mean of its divisors is an integer number (569835).

Almost surely, 2^30720360 is an apocalyptic number.

30720360 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 30720360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54704160).

30720360 is an abundant number, since it is smaller than the sum of its proper divisors (78687960).

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

30720360 is a wasteful number, since it uses less digits than its factorization.

30720360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 75 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 21.

The square root of 30720360 is about 5542.5950600779. The cubic root of 30720360 is about 313.1906346849.

The spelling of 30720360 in words is "thirty million, seven hundred twenty thousand, three hundred sixty".