87081000 has 64 divisors (see below), whose sum is σ = 271702080. Its totient is φ = 23220800.

The previous prime is 87080969. The next prime is 87081019. The reversal of 87081000 is 18078.

It is a super-2 number, since 2×87081000² = 15166201122000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11514 + ... + 17513.

It is an arithmetic number, because the mean of its divisors is an integer number (4245345).

Almost surely, 2^87081000 is an apocalyptic number.

It is an amenable number.

87081000 is an abundant number, since it is smaller than the sum of its proper divisors (184621080).

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

87081000 is a wasteful number, since it uses less digits than its factorization.

87081000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29051 (or 29037 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 87081000 is about 9331.7200986742. The cubic root of 87081000 is about 443.2422347853.

Adding to 87081000 its reverse (18078), we get a palindrome (87099078).

The spelling of 87081000 in words is "eighty-seven million, eighty-one thousand".