87844560 has 40 divisors (see below), whose sum is σ = 272318880. Its totient is φ = 23425152.

The previous prime is 87844541. The next prime is 87844579. The reversal of 87844560 is 6544878.

It is an interprime number because it is at equal distance from previous prime (87844541) and next prime (87844579).

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

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, 182770 + ... + 183249.

It is an arithmetic number, because the mean of its divisors is an integer number (6807972).

Almost surely, 2^87844560 is an apocalyptic number.

87844560 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

87844560 is an abundant number, since it is smaller than the sum of its proper divisors (184474320).

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

87844560 is a wasteful number, since it uses less digits than its factorization.

87844560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366035 (or 366029 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 87844560 is about 9372.5428780027. The cubic root of 87844560 is about 444.5339732604.

The spelling of 87844560 in words is "eighty-seven million, eight hundred forty-four thousand, five hundred sixty".