75744128 has 16 divisors (see below), whose sum is σ = 150896760. Its totient is φ = 37872000.

The previous prime is 75744107. The next prime is 75744169. The reversal of 75744128 is 82144757.

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 75744091 and 75744100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 295748 + ... + 296003.

Almost surely, 2^75744128 is an apocalyptic number.

It is an amenable number.

75744128 is a deficient number, since it is larger than the sum of its proper divisors (75152632).

75744128 is an equidigital number, since it uses as much as digits as its factorization.

75744128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591765 (or 591753 counting only the distinct ones).

The product of its digits is 62720, while the sum is 38.

The square root of 75744128 is about 8703.1102486410. The cubic root of 75744128 is about 423.1064605070.

The spelling of 75744128 in words is "seventy-five million, seven hundred forty-four thousand, one hundred twenty-eight".