30730706 has 4 divisors (see below), whose sum is σ = 46096062. Its totient is φ = 15365352.

The previous prime is 30730669. The next prime is 30730727. The reversal of 30730706 is 60703703.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60703703 = 3467 ⋅17509.

It can be written as a sum of positive squares in only one way, i.e., 25090081 + 5640625 = 5009^2 + 2375^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7682675 + ... + 7682678.

Almost surely, 2^30730706 is an apocalyptic number.

30730706 is a deficient number, since it is larger than the sum of its proper divisors (15365356).

30730706 is a wasteful number, since it uses less digits than its factorization.

30730706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15365355.

The product of its (nonzero) digits is 2646, while the sum is 26.

The square root of 30730706 is about 5543.5282988364. The cubic root of 30730706 is about 313.2257895097.

It can be divided in two parts, 307 and 30706, that added together give a palindrome (31013).

The spelling of 30730706 in words is "thirty million, seven hundred thirty thousand, seven hundred six".