30750730 has 32 divisors (see below), whose sum is σ = 57853440. Its totient is φ = 11753280.

The previous prime is 30750691. The next prime is 30750743. The reversal of 30750730 is 3705703.

It is a junction number, because it is equal to n+sod(n) for n = 30750695 and 30750704.

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 15 ways as a sum of consecutive naturals, for example, 30535 + ... + 31525.

It is an arithmetic number, because the mean of its divisors is an integer number (1807920).

Almost surely, 2^30750730 is an apocalyptic number.

30750730 is a deficient number, since it is larger than the sum of its proper divisors (27102710).

30750730 is a wasteful number, since it uses less digits than its factorization.

30750730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134.

The product of its (nonzero) digits is 2205, while the sum is 25.

The square root of 30750730 is about 5545.3340746974. The cubic root of 30750730 is about 313.2938069450.

The spelling of 30750730 in words is "thirty million, seven hundred fifty thousand, seven hundred thirty".