87016840 has 32 divisors (see below), whose sum is σ = 196505280. Its totient is φ = 34679232.

The previous prime is 87016837. The next prime is 87016847. The reversal of 87016840 is 4861078.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 87016796 and 87016805.

It is not an unprimeable number, because it can be changed into a prime (87016847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7477 + ... + 15163.

It is an arithmetic number, because the mean of its divisors is an integer number (6140790).

Almost surely, 2^87016840 is an apocalyptic number.

It is an amenable number.

87016840 is an abundant number, since it is smaller than the sum of its proper divisors (109488440).

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

87016840 is a wasteful number, since it uses less digits than its factorization.

87016840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7981 (or 7977 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 87016840 is about 9328.2817281641. The cubic root of 87016840 is about 443.1333499195.

The spelling of 87016840 in words is "eighty-seven million, sixteen thousand, eight hundred forty".