74245240 has 32 divisors (see below), whose sum is σ = 167328000. Its totient is φ = 29649024.

The previous prime is 74245207. The next prime is 74245253. The reversal of 74245240 is 4254247.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 74245199 and 74245208.

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 7 ways as a sum of consecutive naturals, for example, 32041 + ... + 34279.

It is an arithmetic number, because the mean of its divisors is an integer number (5229000).

Almost surely, 2^74245240 is an apocalyptic number.

It is an amenable number.

74245240 is an abundant number, since it is smaller than the sum of its proper divisors (93082760).

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

74245240 is a wasteful number, since it uses less digits than its factorization.

74245240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3079 (or 3075 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 28.

The square root of 74245240 is about 8616.5677621661. The cubic root of 74245240 is about 420.2969177854.

Adding to 74245240 its reverse (4254247), we get a palindrome (78499487).

The spelling of 74245240 in words is "seventy-four million, two hundred forty-five thousand, two hundred forty".