74323072 has 32 divisors (see below), whose sum is σ = 149557500. Its totient is φ = 36787200.

The previous prime is 74323069. The next prime is 74323087. The reversal of 74323072 is 27032347.

It can be written as a sum of positive squares in 2 ways, for example, as 74235456 + 87616 = 8616^2 + 296^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 74323072.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10054 + ... + 15802.

Almost surely, 2^74323072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74323072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74778750).

74323072 is an abundant number, since it is smaller than the sum of its proper divisors (75234428).

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

74323072 is a wasteful number, since it uses less digits than its factorization.

74323072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5864 (or 5852 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 28.

The square root of 74323072 is about 8621.0829946127. The cubic root of 74323072 is about 420.4437335965.

The spelling of 74323072 in words is "seventy-four million, three hundred twenty-three thousand, seventy-two".