75081340 has 24 divisors (see below), whose sum is σ = 158879952. Its totient is φ = 29802240.

The previous prime is 75081329. The next prime is 75081341. The reversal of 75081340 is 4318057.

It is a junction number, because it is equal to n+sod(n) for n = 75081299 and 75081308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75081341) 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, 11709 + ... + 16948.

It is an arithmetic number, because the mean of its divisors is an integer number (6619998).

Almost surely, 2^75081340 is an apocalyptic number.

It is an amenable number.

75081340 is an abundant number, since it is smaller than the sum of its proper divisors (83798612).

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

75081340 is a wasteful number, since it uses less digits than its factorization.

75081340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28797 (or 28795 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 75081340 is about 8664.9489323365. The cubic root of 75081340 is about 421.8687327098.

Adding to 75081340 its reverse (4318057), we get a palindrome (79399397).

The spelling of 75081340 in words is "seventy-five million, eighty-one thousand, three hundred forty".