87103720 has 32 divisors (see below), whose sum is σ = 213801120. Its totient is φ = 31673920.

The previous prime is 87103711. The next prime is 87103729. The reversal of 87103720 is 2730178.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (87103711) and next prime (87103729).

It is not an unprimeable number, because it can be changed into a prime (87103729) 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 7 ways as a sum of consecutive naturals, for example, 98542 + ... + 99421.

It is an arithmetic number, because the mean of its divisors is an integer number (6681285).

Almost surely, 2^87103720 is an apocalyptic number.

It is an amenable number.

87103720 is an abundant number, since it is smaller than the sum of its proper divisors (126697400).

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

87103720 is a wasteful number, since it uses less digits than its factorization.

87103720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197985 (or 197981 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 87103720 is about 9332.9373725532. The cubic root of 87103720 is about 443.2807796951.

Adding to 87103720 its reverse (2730178), we get a palindrome (89833898).

The spelling of 87103720 in words is "eighty-seven million, one hundred three thousand, seven hundred twenty".