30308864 has 20 divisors (see below), whose sum is σ = 60559554. Its totient is φ = 15154176.

The previous prime is 30308849. The next prime is 30308869. The reversal of 30308864 is 46880303.

It can be written as a sum of positive squares in only one way, i.e., 27040000 + 3268864 = 5200^2 + 1808^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 30308864.

It is not an unprimeable number, because it can be changed into a prime (30308869) 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 as a sum of consecutive naturals, namely, 29087 + ... + 30110.

Almost surely, 2^30308864 is an apocalyptic number.

It is an amenable number.

30308864 is a deficient number, since it is larger than the sum of its proper divisors (30250690).

30308864 is an frugal number, since it uses more digits than its factorization.

30308864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59215 (or 59199 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 30308864 is about 5505.3486719735. The cubic root of 30308864 is about 311.7859588273.

The spelling of 30308864 in words is "thirty million, three hundred eight thousand, eight hundred sixty-four".