74543312 has 10 divisors (see below), whose sum is σ = 144427698. Its totient is φ = 37271648.

The previous prime is 74543309. The next prime is 74543341. The reversal of 74543312 is 21334547.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 73342096 + 1201216 = 8564^2 + 1096^2 .

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 as a sum of consecutive naturals, namely, 2329463 + ... + 2329494.

Almost surely, 2^74543312 is an apocalyptic number.

It is an amenable number.

74543312 is a deficient number, since it is larger than the sum of its proper divisors (69884386).

74543312 is a wasteful number, since it uses less digits than its factorization.

74543312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4658965 (or 4658959 counting only the distinct ones).

The product of its digits is 10080, while the sum is 29.

The square root of 74543312 is about 8633.8468830528. The cubic root of 74543312 is about 420.8586214215.

Adding to 74543312 its reverse (21334547), we get a palindrome (95877859).

The spelling of 74543312 in words is "seventy-four million, five hundred forty-three thousand, three hundred twelve".