74728742 has 8 divisors (see below), whose sum is σ = 122283432. Its totient is φ = 33967600.

The previous prime is 74728733. The next prime is 74728777. The reversal of 74728742 is 24782747.

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

It is a self number, because there is not a number n which added to its sum of digits gives 74728742.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1698359 + ... + 1698402.

It is an arithmetic number, because the mean of its divisors is an integer number (15285429).

Almost surely, 2^74728742 is an apocalyptic number.

74728742 is a deficient number, since it is larger than the sum of its proper divisors (47554690).

74728742 is a wasteful number, since it uses less digits than its factorization.

74728742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3396774.

The product of its digits is 175616, while the sum is 41.

The square root of 74728742 is about 8644.5787635951. The cubic root of 74728742 is about 421.2073010107.

The spelling of 74728742 in words is "seventy-four million, seven hundred twenty-eight thousand, seven hundred forty-two".