74281738 has 16 divisors (see below), whose sum is σ = 118449864. Its totient is φ = 34816000.

The previous prime is 74281729. The next prime is 74281741. The reversal of 74281738 is 83718247.

It can be written as a sum of positive squares in 4 ways, for example, as 72369049 + 1912689 = 8507^2 + 1383^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 74281738.

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 7 ways as a sum of consecutive naturals, for example, 4488 + ... + 12988.

Almost surely, 2^74281738 is an apocalyptic number.

74281738 is a deficient number, since it is larger than the sum of its proper divisors (44168126).

74281738 is a wasteful number, since it uses less digits than its factorization.

74281738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8777.

The product of its digits is 75264, while the sum is 40.

The square root of 74281738 is about 8618.6853985976. The cubic root of 74281738 is about 420.3657773466.

The spelling of 74281738 in words is "seventy-four million, two hundred eighty-one thousand, seven hundred thirty-eight".