30221405 has 8 divisors (see below), whose sum is σ = 36319200. Its totient is φ = 24141456.

The previous prime is 30221369. The next prime is 30221431. The reversal of 30221405 is 50412203.

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

It is a cyclic number.

It is not a de Polignac number, because 30221405 - 2¹² = 30217309 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 395 + ... + 7784.

It is an arithmetic number, because the mean of its divisors is an integer number (4539900).

Almost surely, 2^30221405 is an apocalyptic number.

It is an amenable number.

30221405 is a deficient number, since it is larger than the sum of its proper divisors (6097795).

30221405 is an equidigital number, since it uses as much as digits as its factorization.

30221405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8923.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 30221405 is about 5497.3998399243. The cubic root of 30221405 is about 311.4857742688.

Adding to 30221405 its reverse (50412203), we get a palindrome (80633608).

The spelling of 30221405 in words is "thirty million, two hundred twenty-one thousand, four hundred five".