75281938 has 8 divisors (see below), whose sum is σ = 112960188. Its totient is φ = 37628544.

The previous prime is 75281929. The next prime is 75281953. The reversal of 75281938 is 83918257.

It can be written as a sum of positive squares in 2 ways, for example, as 75220929 + 61009 = 8673^2 + 247^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 75281894 and 75281903.

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 3 ways as a sum of consecutive naturals, for example, 6870 + ... + 14062.

Almost surely, 2^75281938 is an apocalyptic number.

75281938 is a deficient number, since it is larger than the sum of its proper divisors (37678250).

75281938 is a wasteful number, since it uses less digits than its factorization.

75281938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12428.

The product of its digits is 120960, while the sum is 43.

The square root of 75281938 is about 8676.5164668777. The cubic root of 75281938 is about 422.2441068014.

The spelling of 75281938 in words is "seventy-five million, two hundred eighty-one thousand, nine hundred thirty-eight".