87916281 has 8 divisors (see below), whose sum is σ = 122318400. Its totient is φ = 56062512.

The previous prime is 87916271. The next prime is 87916291. The reversal of 87916281 is 18261978.

It is an interprime number because it is at equal distance from previous prime (87916271) and next prime (87916291).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87916281 - 2¹⁰ = 87915257 is a prime.

It is a super-2 number, since 2×87916281² = 15458544929741922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87916271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 637006 + ... + 637143.

It is an arithmetic number, because the mean of its divisors is an integer number (15289800).

Almost surely, 2^87916281 is an apocalyptic number.

It is an amenable number.

87916281 is a deficient number, since it is larger than the sum of its proper divisors (34402119).

87916281 is a wasteful number, since it uses less digits than its factorization.

87916281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274175.

The product of its digits is 48384, while the sum is 42.

The square root of 87916281 is about 9376.3682201586. The cubic root of 87916281 is about 444.6549207924.

The spelling of 87916281 in words is "eighty-seven million, nine hundred sixteen thousand, two hundred eighty-one".