74708728 has 16 divisors (see below), whose sum is σ = 140186880. Its totient is φ = 37325568.

The previous prime is 74708719. The next prime is 74708737. The reversal of 74708728 is 82780747.

It is an interprime number because it is at equal distance from previous prime (74708719) and next prime (74708737).

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, 10825 + ... + 16327.

It is an arithmetic number, because the mean of its divisors is an integer number (8761680).

Almost surely, 2^74708728 is an apocalyptic number.

It is an amenable number.

74708728 is a deficient number, since it is larger than the sum of its proper divisors (65478152).

74708728 is a wasteful number, since it uses less digits than its factorization.

74708728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7206 (or 7202 counting only the distinct ones).

The product of its (nonzero) digits is 175616, while the sum is 43.

The square root of 74708728 is about 8643.4210819559. The cubic root of 74708728 is about 421.1696947948.

The spelling of 74708728 in words is "seventy-four million, seven hundred eight thousand, seven hundred twenty-eight".