75428774 has 8 divisors (see below), whose sum is σ = 113180328. Its totient is φ = 37702000.

The previous prime is 75428747. The next prime is 75428827. The reversal of 75428774 is 47782457.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7274 + ... + 14274.

It is an arithmetic number, because the mean of its divisors is an integer number (14147541).

Almost surely, 2^75428774 is an apocalyptic number.

75428774 is a deficient number, since it is larger than the sum of its proper divisors (37751554).

75428774 is a wasteful number, since it uses less digits than its factorization.

75428774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12390.

The product of its digits is 439040, while the sum is 44.

The square root of 75428774 is about 8684.9740356549. The cubic root of 75428774 is about 422.5184548969.

The spelling of 75428774 in words is "seventy-five million, four hundred twenty-eight thousand, seven hundred seventy-four".