30020402 has 8 divisors (see below), whose sum is σ = 47679516. Its totient is φ = 14127232.

The previous prime is 30020401. The next prime is 30020411. The reversal of 30020402 is 20402003.

It can be written as a sum of positive squares in 2 ways, for example, as 30019441 + 961 = 5479^2 + 31^2 .

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

It is not an unprimeable number, because it can be changed into a prime (30020401) 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 3 ways as a sum of consecutive naturals, for example, 441443 + ... + 441510.

Almost surely, 2^30020402 is an apocalyptic number.

30020402 is a deficient number, since it is larger than the sum of its proper divisors (17659114).

30020402 is a wasteful number, since it uses less digits than its factorization.

30020402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882972.

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 30020402 is about 5479.0876977833. The cubic root of 30020402 is about 310.7936721424.

Adding to 30020402 its reverse (20402003), we get a palindrome (50422405).

It can be divided in two parts, 300 and 20402, that added together give a palindrome (20702).

The spelling of 30020402 in words is "thirty million, twenty thousand, four hundred two".