74310240 has 192 divisors, whose sum is σ = 250822656. Its totient is φ = 18450432.

The previous prime is 74310227. The next prime is 74310241. The reversal of 74310240 is 4201347.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74310241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 585057 + ... + 585183.

It is an arithmetic number, because the mean of its divisors is an integer number (1306368).

Almost surely, 2^74310240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74310240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125411328).

74310240 is an abundant number, since it is smaller than the sum of its proper divisors (176512416).

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

74310240 is a wasteful number, since it uses less digits than its factorization.

74310240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 74310240 is about 8620.3387404440. The cubic root of 74310240 is about 420.4195354376.

Adding to 74310240 its reverse (4201347), we get a palindrome (78511587).

The spelling of 74310240 in words is "seventy-four million, three hundred ten thousand, two hundred forty".