75018340 has 12 divisors (see below), whose sum is σ = 157538556. Its totient is φ = 30007328.

The previous prime is 75018319. The next prime is 75018343. The reversal of 75018340 is 4381057.

It can be written as a sum of positive squares in 2 ways, for example, as 10086976 + 64931364 = 3176^2 + 8058^2 .

It is a junction number, because it is equal to n+sod(n) for n = 75018299 and 75018308.

It is not an unprimeable number, because it can be changed into a prime (75018343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1875439 + ... + 1875478.

It is an arithmetic number, because the mean of its divisors is an integer number (13128213).

Almost surely, 2^75018340 is an apocalyptic number.

It is an amenable number.

75018340 is an abundant number, since it is smaller than the sum of its proper divisors (82520216).

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

75018340 is a wasteful number, since it uses less digits than its factorization.

75018340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3750926 (or 3750924 counting only the distinct ones).

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

The square root of 75018340 is about 8661.3128335143. The cubic root of 75018340 is about 421.7507044162.

Adding to 75018340 its reverse (4381057), we get a palindrome (79399397).

The spelling of 75018340 in words is "seventy-five million, eighteen thousand, three hundred forty".