30202420 has 12 divisors (see below), whose sum is σ = 63425124. Its totient is φ = 12080960.

The previous prime is 30202409. The next prime is 30202439. The reversal of 30202420 is 2420203.

It can be written as a sum of positive squares in 2 ways, for example, as 9024016 + 21178404 = 3004^2 + 4602^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30202420.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 755041 + ... + 755080.

It is an arithmetic number, because the mean of its divisors is an integer number (5285427).

Almost surely, 2^30202420 is an apocalyptic number.

It is an amenable number.

30202420 is an abundant number, since it is smaller than the sum of its proper divisors (33222704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30202420 is a wasteful number, since it uses less digits than its factorization.

30202420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510130 (or 1510128 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 30202420 is about 5495.6728432468. The cubic root of 30202420 is about 311.4205357825.

Adding to 30202420 its reverse (2420203), we get a palindrome (32622623).

The spelling of 30202420 in words is "thirty million, two hundred two thousand, four hundred twenty".