30021475 has 12 divisors (see below), whose sum is σ = 40611240. Its totient is φ = 21833600.

The previous prime is 30021461. The next prime is 30021491. The reversal of 30021475 is 57412003.

It is not a de Polignac number, because 30021475 - 2⁷ = 30021347 is a prime.

It is a super-2 number, since 2×30021475² = 1802577922351250, which contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 54310 + ... + 54859.

It is an arithmetic number, because the mean of its divisors is an integer number (3384270).

Almost surely, 2^30021475 is an apocalyptic number.

30021475 is a deficient number, since it is larger than the sum of its proper divisors (10589765).

30021475 is a wasteful number, since it uses less digits than its factorization.

30021475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109190 (or 109185 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 30021475 is about 5479.1856146694. The cubic root of 30021475 is about 310.7973749314.

Adding to 30021475 its reverse (57412003), we get a palindrome (87433478).

The spelling of 30021475 in words is "thirty million, twenty-one thousand, four hundred seventy-five".