30421330 has 32 divisors (see below), whose sum is σ = 58417200. Its totient is φ = 11366400.

The previous prime is 30421291. The next prime is 30421333. The reversal of 30421330 is 3312403.

It can be written as a sum of positive squares in 8 ways, for example, as 2193361 + 28227969 = 1481^2 + 5313^2 .

It is not an unprimeable number, because it can be changed into a prime (30421333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24730 + ... + 25930.

Almost surely, 2^30421330 is an apocalyptic number.

30421330 is a deficient number, since it is larger than the sum of its proper divisors (27995870).

30421330 is a wasteful number, since it uses less digits than its factorization.

30421330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 30421330 is about 5515.5534627089. The cubic root of 30421330 is about 312.1711270844.

Adding to 30421330 its reverse (3312403), we get a palindrome (33733733).

The spelling of 30421330 in words is "thirty million, four hundred twenty-one thousand, three hundred thirty".