74604240 has 200 divisors, whose sum is σ = 268721640. Its totient is φ = 19160064.

The previous prime is 74604221. The next prime is 74604251. The reversal of 74604240 is 4240647.

It can be written as a sum of positive squares in 4 ways, for example, as 12446784 + 62157456 = 3528^2 + 7884^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 187722 + ... + 188118.

Almost surely, 2^74604240 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 74604240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134360820).

74604240 is an abundant number, since it is smaller than the sum of its proper divisors (194117400).

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

74604240 is a wasteful number, since it uses less digits than its factorization.

74604240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451 (or 436 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 74604240 is about 8637.3746011158. The cubic root of 74604240 is about 420.9732531722.

Adding to 74604240 its reverse (4240647), we get a palindrome (78844887).

The spelling of 74604240 in words is "seventy-four million, six hundred four thousand, two hundred forty".