30420304 has 40 divisors (see below), whose sum is σ = 62172360. Its totient is φ = 14396928.

The previous prime is 30420277. The next prime is 30420317. The reversal of 30420304 is 40302403.

It can be written as a sum of positive squares in 4 ways, for example, as 11235904 + 19184400 = 3352^2 + 4380^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23974 + ... + 25210.

It is an arithmetic number, because the mean of its divisors is an integer number (1554309).

Almost surely, 2^30420304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30420304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31086180).

30420304 is an abundant number, since it is smaller than the sum of its proper divisors (31752056).

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

30420304 is a wasteful number, since it uses less digits than its factorization.

30420304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327 (or 1321 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 30420304 is about 5515.4604522197. The cubic root of 30420304 is about 312.1676175822.

Adding to 30420304 its reverse (40302403), we get a palindrome (70722707).

The spelling of 30420304 in words is "thirty million, four hundred twenty thousand, three hundred four".