30320402 has 32 divisors (see below), whose sum is σ = 53875584. Its totient is φ = 12528000.

The previous prime is 30320393. The next prime is 30320453. The reversal of 30320402 is 20402303.

It is a Harshad number since it is a multiple of its sum of digits (14).

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 in 15 ways as a sum of consecutive naturals, for example, 57713 + ... + 58235.

It is an arithmetic number, because the mean of its divisors is an integer number (1683612).

Almost surely, 2^30320402 is an apocalyptic number.

30320402 is a deficient number, since it is larger than the sum of its proper divisors (23555182).

30320402 is a wasteful number, since it uses less digits than its factorization.

30320402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674.

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 30320402 is about 5506.3964622973. The cubic root of 30320402 is about 311.8255174418.

Adding to 30320402 its reverse (20402303), we get a palindrome (50722705).

The spelling of 30320402 in words is "thirty million, three hundred twenty thousand, four hundred two".