7500000040 has 32 divisors (see below), whose sum is σ = 18173078280. Its totient is φ = 2769230592.

The previous prime is 7500000031. The next prime is 7500000047. The reversal of 7500000040 is 400000057.

It can be written as a sum of positive squares in 4 ways, for example, as 2725466436 + 4774533604 = 52206^2 + 69098^2 .

It is not an unprimeable number, because it can be changed into a prime (7500000047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7211019 + ... + 7212058.

Almost surely, 2^7500000040 is an apocalyptic number.

It is an amenable number.

7500000040 is an abundant number, since it is smaller than the sum of its proper divisors (10673078240).

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

7500000040 is a wasteful number, since it uses less digits than its factorization.

7500000040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14423101 (or 14423097 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 16.

The square root of 7500000040 is about 86602.5406093840. The cubic root of 7500000040 is about 1957.4338240643.

Adding to 7500000040 its reverse (400000057), we get a palindrome (7900000097).

The spelling of 7500000040 in words is "seven billion, five hundred million, forty", and thus it is an aban number.