74272340 has 12 divisors (see below), whose sum is σ = 155971956. Its totient is φ = 29708928.

The previous prime is 74272339. The next prime is 74272343. The reversal of 74272340 is 4327247.

It can be written as a sum of positive squares in 2 ways, for example, as 41964484 + 32307856 = 6478^2 + 5684^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74272343) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1856789 + ... + 1856828.

It is an arithmetic number, because the mean of its divisors is an integer number (12997663).

Almost surely, 2^74272340 is an apocalyptic number.

It is an amenable number.

74272340 is an abundant number, since it is smaller than the sum of its proper divisors (81699616).

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

74272340 is a wasteful number, since it uses less digits than its factorization.

74272340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3713626 (or 3713624 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 29.

The square root of 74272340 is about 8618.1401705937. The cubic root of 74272340 is about 420.3480486095.

Adding to 74272340 its reverse (4327247), we get a palindrome (78599587).

The spelling of 74272340 in words is "seventy-four million, two hundred seventy-two thousand, three hundred forty".