30820345 has 8 divisors (see below), whose sum is σ = 38592576. Its totient is φ = 23584176.

The previous prime is 30820313. The next prime is 30820369. The reversal of 30820345 is 54302803.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30820345 - 2⁵ = 30820313 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133887 + ... + 134116.

It is an arithmetic number, because the mean of its divisors is an integer number (4824072).

Almost surely, 2^30820345 is an apocalyptic number.

It is an amenable number.

30820345 is a deficient number, since it is larger than the sum of its proper divisors (7772231).

30820345 is a wasteful number, since it uses less digits than its factorization.

30820345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268031.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 30820345 is about 5551.6074248816. The cubic root of 30820345 is about 313.5300453573.

The spelling of 30820345 in words is "thirty million, eight hundred twenty thousand, three hundred forty-five".