74047240 has 32 divisors (see below), whose sum is σ = 176408280. Its totient is φ = 27876352.

The previous prime is 74047187. The next prime is 74047243. The reversal of 74047240 is 4274047.

It can be written as a sum of positive squares in 4 ways, for example, as 65901924 + 8145316 = 8118^2 + 2854^2 .

It is a junction number, because it is equal to n+sod(n) for n = 74047199 and 74047208.

It is not an unprimeable number, because it can be changed into a prime (74047243) 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 7 ways as a sum of consecutive naturals, for example, 53767 + ... + 55126.

Almost surely, 2^74047240 is an apocalyptic number.

It is an amenable number.

74047240 is an abundant number, since it is smaller than the sum of its proper divisors (102361040).

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

74047240 is a wasteful number, since it uses less digits than its factorization.

74047240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108921 (or 108917 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 28.

The square root of 74047240 is about 8605.0705981996. The cubic root of 74047240 is about 419.9229639511.

The spelling of 74047240 in words is "seventy-four million, forty-seven thousand, two hundred forty".