30930120 has 128 divisors (see below), whose sum is σ = 111081600. Its totient is φ = 7610112.

The previous prime is 30930103. The next prime is 30930121. The reversal of 30930120 is 2103903.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 30930093 and 30930102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30930121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12939 + ... + 15141.

It is an arithmetic number, because the mean of its divisors is an integer number (867825).

Almost surely, 2^30930120 is an apocalyptic number.

30930120 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 30930120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55540800).

30930120 is an abundant number, since it is smaller than the sum of its proper divisors (80151480).

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

30930120 is a wasteful number, since it uses less digits than its factorization.

30930120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236 (or 2226 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 30930120 is about 5561.4854130888. The cubic root of 30930120 is about 313.9018449881.

The spelling of 30930120 in words is "thirty million, nine hundred thirty thousand, one hundred twenty".