74516240 has 40 divisors (see below), whose sum is σ = 173660760. Its totient is φ = 29735936.

The previous prime is 74516227. The next prime is 74516243. The reversal of 74516240 is 4261547.

It can be written as a sum of positive squares in 4 ways, for example, as 2062096 + 72454144 = 1436^2 + 8512^2 .

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

It is not an unprimeable number, because it can be changed into a prime (74516243) 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, 44702 + ... + 46338.

It is an arithmetic number, because the mean of its divisors is an integer number (4341519).

Almost surely, 2^74516240 is an apocalyptic number.

It is an amenable number.

74516240 is an abundant number, since it is smaller than the sum of its proper divisors (99144520).

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

74516240 is a wasteful number, since it uses less digits than its factorization.

74516240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2219 (or 2213 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 74516240 is about 8632.2789574944. The cubic root of 74516240 is about 420.8076673125.

Adding to 74516240 its reverse (4261547), we get a palindrome (78777787).

The spelling of 74516240 in words is "seventy-four million, five hundred sixteen thousand, two hundred forty".