87040144 has 10 divisors (see below), whose sum is σ = 168640310. Its totient is φ = 43520064.

The previous prime is 87040141. The next prime is 87040201. The reversal of 87040144 is 44104078.

It can be written as a sum of positive squares in only one way, i.e., 61152400 + 25887744 = 7820^2 + 5088^2 .

It is not an unprimeable number, because it can be changed into a prime (87040141) by changing a digit.

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 as a sum of consecutive naturals, namely, 2719989 + ... + 2720020.

It is an arithmetic number, because the mean of its divisors is an integer number (16864031).

Almost surely, 2^87040144 is an apocalyptic number.

It is an amenable number.

87040144 is a deficient number, since it is larger than the sum of its proper divisors (81600166).

87040144 is a wasteful number, since it uses less digits than its factorization.

87040144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5440017 (or 5440011 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 87040144 is about 9329.5307491856. The cubic root of 87040144 is about 443.1729049369.

It can be divided in two parts, 870 and 40144, that added together give a palindrome (41014).

The spelling of 87040144 in words is "eighty-seven million, forty thousand, one hundred forty-four".