74478248 has 16 divisors (see below), whose sum is σ = 150388980. Its totient is φ = 34374528.

The previous prime is 74478247. The next prime is 74478251. The reversal of 74478248 is 84287447.

It can be written as a sum of positive squares in 2 ways, for example, as 56821444 + 17656804 = 7538^2 + 4202^2 .

It is a junction number, because it is equal to n+sod(n) for n = 74478199 and 74478208.

It is not an unprimeable number, because it can be changed into a prime (74478247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357965 + ... + 358172.

Almost surely, 2^74478248 is an apocalyptic number.

It is an amenable number.

74478248 is an abundant number, since it is smaller than the sum of its proper divisors (75910732).

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

74478248 is a wasteful number, since it uses less digits than its factorization.

74478248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716156 (or 716152 counting only the distinct ones).

The product of its digits is 401408, while the sum is 44.

The square root of 74478248 is about 8630.0780992990. The cubic root of 74478248 is about 420.7361390894.

The spelling of 74478248 in words is "seventy-four million, four hundred seventy-eight thousand, two hundred forty-eight".