87547760 has 40 divisors (see below), whose sum is σ = 205038960. Its totient is φ = 34762752.

The previous prime is 87547741. The next prime is 87547843. The reversal of 87547760 is 6774578.

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

It is a super-2 number, since 2×87547760² = 15329220562035200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7184 + ... + 15056.

It is an arithmetic number, because the mean of its divisors is an integer number (5125974).

Almost surely, 2^87547760 is an apocalyptic number.

87547760 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87547760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102519480).

87547760 is an abundant number, since it is smaller than the sum of its proper divisors (117491200).

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

87547760 is a wasteful number, since it uses less digits than its factorization.

87547760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8025 (or 8019 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 44.

The square root of 87547760 is about 9356.6959980540. The cubic root of 87547760 is about 444.0327600750.

The spelling of 87547760 in words is "eighty-seven million, five hundred forty-seven thousand, seven hundred sixty".