30320746 has 4 divisors (see below), whose sum is σ = 45481122. Its totient is φ = 15160372.

The previous prime is 30320729. The next prime is 30320767. The reversal of 30320746 is 64702303.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 26163225 + 4157521 = 5115^2 + 2039^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30320746.

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 as a sum of consecutive naturals, namely, 7580185 + ... + 7580188.

Almost surely, 2^30320746 is an apocalyptic number.

30320746 is a deficient number, since it is larger than the sum of its proper divisors (15160376).

30320746 is a wasteful number, since it uses less digits than its factorization.

30320746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15160375.

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 30320746 is about 5506.4276986082. The cubic root of 30320746 is about 311.8266967091.

The spelling of 30320746 in words is "thirty million, three hundred twenty thousand, seven hundred forty-six".