75404340 has 72 divisors (see below), whose sum is σ = 249526368. Its totient is φ = 18279360.

The previous prime is 75404339. The next prime is 75404353. The reversal of 75404340 is 4340457.

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 23 ways as a sum of consecutive naturals, for example, 17062 + ... + 21021.

It is an arithmetic number, because the mean of its divisors is an integer number (3465644).

Almost surely, 2^75404340 is an apocalyptic number.

It is an amenable number.

75404340 is an abundant number, since it is smaller than the sum of its proper divisors (174122028).

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

75404340 is a wasteful number, since it uses less digits than its factorization.

75404340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38109 (or 38104 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 75404340 is about 8683.5672393320. The cubic root of 75404340 is about 422.4728271683.

Adding to 75404340 its reverse (4340457), we get a palindrome (79744797).

The spelling of 75404340 in words is "seventy-five million, four hundred four thousand, three hundred forty".