74328073 has 8 divisors (see below), whose sum is σ = 78153480. Its totient is φ = 70586880.

The previous prime is 74328053. The next prime is 74328109. The reversal of 74328073 is 37082347.

It can be written as a sum of positive squares in 4 ways, for example, as 831744 + 73496329 = 912^2 + 8573^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74328073 - 2⁵ = 74328041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74328043) 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, 19240 + ... + 22777.

It is an arithmetic number, because the mean of its divisors is an integer number (9769185).

Almost surely, 2^74328073 is an apocalyptic number.

It is an amenable number.

74328073 is a deficient number, since it is larger than the sum of its proper divisors (3825407).

74328073 is a wasteful number, since it uses less digits than its factorization.

74328073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42107.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 74328073 is about 8621.3730344998. The cubic root of 74328073 is about 420.4531635617.

The spelling of 74328073 in words is "seventy-four million, three hundred twenty-eight thousand, seventy-three".