74500240 has 40 divisors (see below), whose sum is σ = 177901560. Its totient is φ = 28993536.

The previous prime is 74500213. The next prime is 74500241. The reversal of 74500240 is 4200547.

It can be written as a sum of positive squares in 4 ways, for example, as 12027024 + 62473216 = 3468^2 + 7904^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74500241) 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, 9625 + ... + 15544.

It is an arithmetic number, because the mean of its divisors is an integer number (4447539).

Almost surely, 2^74500240 is an apocalyptic number.

It is an amenable number.

74500240 is an abundant number, since it is smaller than the sum of its proper divisors (103401320).

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

74500240 is a wasteful number, since it uses less digits than its factorization.

74500240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25219 (or 25213 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 74500240 is about 8631.3521536316. The cubic root of 74500240 is about 420.7775467883. Note that the first 3 decimals are identical.

Adding to 74500240 its reverse (4200547), we get a palindrome (78700787).

The spelling of 74500240 in words is "seventy-four million, five hundred thousand, two hundred forty".