74443216 has 40 divisors (see below), whose sum is σ = 154008000. Its totient is φ = 34755840.

The previous prime is 74443211. The next prime is 74443247. The reversal of 74443216 is 61234447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74443211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19860 + ... + 23308.

It is an arithmetic number, because the mean of its divisors is an integer number (3850200).

Almost surely, 2^74443216 is an apocalyptic number.

74443216 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74443216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77004000).

74443216 is an abundant number, since it is smaller than the sum of its proper divisors (79564784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74443216 is a wasteful number, since it uses less digits than its factorization.

74443216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3547 (or 3541 counting only the distinct ones).

The product of its digits is 16128, while the sum is 31.

The square root of 74443216 is about 8628.0482149789. The cubic root of 74443216 is about 420.6701621527.

The spelling of 74443216 in words is "seventy-four million, four hundred forty-three thousand, two hundred sixteen".