87201040 has 20 divisors (see below), whose sum is σ = 202742604. Its totient is φ = 34880384.

The previous prime is 87201031. The next prime is 87201053. The reversal of 87201040 is 4010278.

It can be written as a sum of positive squares in 2 ways, for example, as 19501056 + 67699984 = 4416^2 + 8228^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 544927 + ... + 545086.

Almost surely, 2^87201040 is an apocalyptic number.

87201040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

87201040 is an abundant number, since it is smaller than the sum of its proper divisors (115541564).

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

87201040 is a wasteful number, since it uses less digits than its factorization.

87201040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090026 (or 1090020 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 87201040 is about 9338.1497096588. The cubic root of 87201040 is about 443.4458091137.

The spelling of 87201040 in words is "eighty-seven million, two hundred one thousand, forty".