87103040 has 56 divisors (see below), whose sum is σ = 208346040. Its totient is φ = 34684928.

The previous prime is 87103039. The next prime is 87103043. The reversal of 87103040 is 4030178.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6390784 + 80712256 = 2528^2 + 8984^2 .

It is a junction number, because it is equal to n+sod(n) for n = 87102997 and 87103015.

It is not an unprimeable number, because it can be changed into a prime (87103043) 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, 93296 + ... + 94224.

It is an arithmetic number, because the mean of its divisors is an integer number (3720465).

Almost surely, 2^87103040 is an apocalyptic number.

87103040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87103040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104173020).

87103040 is an abundant number, since it is smaller than the sum of its proper divisors (121243000).

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

87103040 is a wasteful number, since it uses less digits than its factorization.

87103040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239 (or 1229 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 87103040 is about 9332.9009423651. The cubic root of 87103040 is about 443.2796261596.

The spelling of 87103040 in words is "eighty-seven million, one hundred three thousand, forty".