30820377 has 16 divisors (see below), whose sum is σ = 47134080. Its totient is φ = 17548032.

The previous prime is 30820373. The next prime is 30820421. The reversal of 30820377 is 77302803.

It is not a de Polignac number, because 30820377 - 2² = 30820373 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30820373) 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, 3649 + ... + 8657.

It is an arithmetic number, because the mean of its divisors is an integer number (2945880).

Almost surely, 2^30820377 is an apocalyptic number.

It is an amenable number.

30820377 is a deficient number, since it is larger than the sum of its proper divisors (16313703).

30820377 is a wasteful number, since it uses less digits than its factorization.

30820377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5312.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 30820377 is about 5551.6103069290. The cubic root of 30820377 is about 313.5301538675.

The spelling of 30820377 in words is "thirty million, eight hundred twenty thousand, three hundred seventy-seven".