75072218 has 16 divisors (see below), whose sum is σ = 121611336. Its totient is φ = 34551360.

The previous prime is 75072203. The next prime is 75072229. The reversal of 75072218 is 81227057.

It can be written as a sum of positive squares in 4 ways, for example, as 42159049 + 32913169 = 6493^2 + 5737^2 .

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, 5828 + ... + 13568.

Almost surely, 2^75072218 is an apocalyptic number.

75072218 is a deficient number, since it is larger than the sum of its proper divisors (46539118).

75072218 is a wasteful number, since it uses less digits than its factorization.

75072218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8129.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 75072218 is about 8664.4225427896. The cubic root of 75072218 is about 421.8516470512.

The spelling of 75072218 in words is "seventy-five million, seventy-two thousand, two hundred eighteen".