87367988 has 12 divisors (see below), whose sum is σ = 153868932. Its totient is φ = 43405440.

The previous prime is 87367963. The next prime is 87367993. The reversal of 87367988 is 88976378.

It can be written as a sum of positive squares in 2 ways, for example, as 29181604 + 58186384 = 5402^2 + 7628^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 68933 + ... + 70188.

It is an arithmetic number, because the mean of its divisors is an integer number (12822411).

Almost surely, 2^87367988 is an apocalyptic number.

It is an amenable number.

87367988 is a deficient number, since it is larger than the sum of its proper divisors (66500944).

87367988 is a wasteful number, since it uses less digits than its factorization.

87367988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139282 (or 139280 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 56.

The square root of 87367988 is about 9347.0844652223. The cubic root of 87367988 is about 443.7286237670.

The spelling of 87367988 in words is "eighty-seven million, three hundred sixty-seven thousand, nine hundred eighty-eight".