30750930 has 144 divisors (see below), whose sum is σ = 98167680. Its totient is φ = 6640704.

The previous prime is 30750901. The next prime is 30750961. The reversal of 30750930 is 3905703.

It is a junction number, because it is equal to n+sod(n) for n = 30750894 and 30750903.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 83607 + ... + 83973.

It is an arithmetic number, because the mean of its divisors is an integer number (681720).

Almost surely, 2^30750930 is an apocalyptic number.

30750930 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30750930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49083840).

30750930 is an abundant number, since it is smaller than the sum of its proper divisors (67416750).

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

30750930 is a wasteful number, since it uses less digits than its factorization.

30750930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413 (or 403 counting only the distinct ones).

The product of its (nonzero) digits is 2835, while the sum is 27.

The square root of 30750930 is about 5545.3521078467. The cubic root of 30750930 is about 313.2944861552.

The spelling of 30750930 in words is "thirty million, seven hundred fifty thousand, nine hundred thirty".