74318778 has 12 divisors (see below), whose sum is σ = 161024058. Its totient is φ = 24772920.

The previous prime is 74318743. The next prime is 74318779. The reversal of 74318778 is 87781347.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 40411449 + 33907329 = 6357^2 + 5823^2 .

It is not an unprimeable number, because it can be changed into a prime (74318779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2064393 + ... + 2064428.

Almost surely, 2^74318778 is an apocalyptic number.

74318778 is an abundant number, since it is smaller than the sum of its proper divisors (86705280).

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

74318778 is a wasteful number, since it uses less digits than its factorization.

74318778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4128829 (or 4128826 counting only the distinct ones).

The product of its digits is 263424, while the sum is 45.

The square root of 74318778 is about 8620.8339503786. The cubic root of 74318778 is about 420.4356364242.

The spelling of 74318778 in words is "seventy-four million, three hundred eighteen thousand, seven hundred seventy-eight".