74324978 has 16 divisors (see below), whose sum is σ = 137215680. Its totient is φ = 29403216.

The previous prime is 74324977. The next prime is 74324981. The reversal of 74324978 is 87942347.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (74324977) 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, 204008 + ... + 204371.

It is an arithmetic number, because the mean of its divisors is an integer number (8575980).

Almost surely, 2^74324978 is an apocalyptic number.

74324978 is a deficient number, since it is larger than the sum of its proper divisors (62890702).

74324978 is a wasteful number, since it uses less digits than its factorization.

74324978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408401.

The product of its digits is 338688, while the sum is 44.

The square root of 74324978 is about 8621.1935368602. The cubic root of 74324978 is about 420.4473276303.

The spelling of 74324978 in words is "seventy-four million, three hundred twenty-four thousand, nine hundred seventy-eight".