30750330 has 64 divisors (see below), whose sum is σ = 81664128. Its totient is φ = 7361280.

The previous prime is 30750319. The next prime is 30750337. The reversal of 30750330 is 3305703.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30750297 and 30750306.

It is not an unprimeable number, because it can be changed into a prime (30750337) 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, 13365 + ... + 15495.

It is an arithmetic number, because the mean of its divisors is an integer number (1276002).

Almost surely, 2^30750330 is an apocalyptic number.

30750330 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 30750330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40832064).

30750330 is an abundant number, since it is smaller than the sum of its proper divisors (50913798).

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

30750330 is a wasteful number, since it uses less digits than its factorization.

30750330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2191.

The product of its (nonzero) digits is 945, while the sum is 21.

The square root of 30750330 is about 5545.2980082228. The cubic root of 30750330 is about 313.2924485158.

The spelling of 30750330 in words is "thirty million, seven hundred fifty thousand, three hundred thirty".