74521738 has 8 divisors (see below), whose sum is σ = 111824388. Its totient is φ = 37246944.

The previous prime is 74521721. The next prime is 74521753. The reversal of 74521738 is 83712547.

It can be written as a sum of positive squares in 2 ways, for example, as 61826769 + 12694969 = 7863^2 + 3563^2 .

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 = 74521697 and 74521706.

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, 2070 + ... + 12382.

Almost surely, 2^74521738 is an apocalyptic number.

74521738 is a deficient number, since it is larger than the sum of its proper divisors (37302650).

74521738 is a wasteful number, since it uses less digits than its factorization.

74521738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13928.

The product of its digits is 47040, while the sum is 37.

The square root of 74521738 is about 8632.5974075014. The cubic root of 74521738 is about 420.8180164823.

The spelling of 74521738 in words is "seventy-four million, five hundred twenty-one thousand, seven hundred thirty-eight".