75224128 has 28 divisors (see below), whose sum is σ = 170598592. Its totient is φ = 32238720.

The previous prime is 75224117. The next prime is 75224131. The reversal of 75224128 is 82142257.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (28).

It is a self number, because there is not a number n which added to its sum of digits gives 75224128.

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, 83508 + ... + 84403.

Almost surely, 2^75224128 is an apocalyptic number.

It is an amenable number.

75224128 is an abundant number, since it is smaller than the sum of its proper divisors (95374464).

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

75224128 is a wasteful number, since it uses less digits than its factorization.

75224128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167930 (or 167920 counting only the distinct ones).

The product of its digits is 8960, while the sum is 31.

The square root of 75224128 is about 8673.1844209610. The cubic root of 75224128 is about 422.1359968379.

The spelling of 75224128 in words is "seventy-five million, two hundred twenty-four thousand, one hundred twenty-eight".