75631140 has 72 divisors (see below), whose sum is σ = 247069368. Its totient is φ = 18616320.

The previous prime is 75631133. The next prime is 75631163. The reversal of 75631140 is 4113657.

It can be written as a sum of positive squares in 4 ways, for example, as 254016 + 75377124 = 504^2 + 8682^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13821 + ... + 18500.

It is an arithmetic number, because the mean of its divisors is an integer number (3431519).

Almost surely, 2^75631140 is an apocalyptic number.

It is an amenable number.

75631140 is an abundant number, since it is smaller than the sum of its proper divisors (171438228).

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

75631140 is a wasteful number, since it uses less digits than its factorization.

75631140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32349 (or 32344 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 75631140 is about 8696.6165834766. The cubic root of 75631140 is about 422.8959722726.

Adding to 75631140 its reverse (4113657), we get a palindrome (79744797).

The spelling of 75631140 in words is "seventy-five million, six hundred thirty-one thousand, one hundred forty".