75222320 has 20 divisors (see below), whose sum is σ = 174892080. Its totient is φ = 30088896.

The previous prime is 75222281. The next prime is 75222373. The reversal of 75222320 is 2322257.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470060 + ... + 470219.

It is an arithmetic number, because the mean of its divisors is an integer number (8744604).

Almost surely, 2^75222320 is an apocalyptic number.

It is an amenable number.

75222320 is an abundant number, since it is smaller than the sum of its proper divisors (99669760).

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

75222320 is a wasteful number, since it uses less digits than its factorization.

75222320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940292 (or 940286 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 75222320 is about 8673.0801910279. The cubic root of 75222320 is about 422.1326148202.

Adding to 75222320 its reverse (2322257), we get a palindrome (77544577).

The spelling of 75222320 in words is "seventy-five million, two hundred twenty-two thousand, three hundred twenty".