87027440 has 20 divisors (see below), whose sum is σ = 202338984. Its totient is φ = 34810944.

The previous prime is 87027433. The next prime is 87027449. The reversal of 87027440 is 4472078.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 87027397 and 87027406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87027449) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 543842 + ... + 544001.

Almost surely, 2^87027440 is an apocalyptic number.

87027440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

87027440 is an abundant number, since it is smaller than the sum of its proper divisors (115311544).

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

87027440 is a wasteful number, since it uses less digits than its factorization.

87027440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087856 (or 1087850 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 87027440 is about 9328.8498755206. The cubic root of 87027440 is about 443.1513426927.

The spelling of 87027440 in words is "eighty-seven million, twenty-seven thousand, four hundred forty".