30820365 has 16 divisors (see below), whose sum is σ = 54792000. Its totient is φ = 16437456.

The previous prime is 30820313. The next prime is 30820369. The reversal of 30820365 is 56302803.

It is not a de Polignac number, because 30820365 - 2¹⁷ = 30689293 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30820369) by changing a digit.

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, 114015 + ... + 114284.

It is an arithmetic number, because the mean of its divisors is an integer number (3424500).

Almost surely, 2^30820365 is an apocalyptic number.

It is an amenable number.

30820365 is a deficient number, since it is larger than the sum of its proper divisors (23971635).

30820365 is a wasteful number, since it uses less digits than its factorization.

30820365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228313 (or 228307 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 30820365 is about 5551.6092261614. The cubic root of 30820365 is about 313.5301131762.

The spelling of 30820365 in words is "thirty million, eight hundred twenty thousand, three hundred sixty-five".