987240 has 64 divisors (see below), whose sum is σ = 3124800. Its totient is φ = 248832.

The previous prime is 987227. The next prime is 987251. The reversal of 987240 is 42789.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 987198 and 987207.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 987240.

It is an unprimeable number.

987240 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2064 + ... + 2496.

It is an arithmetic number, because the mean of its divisors is an integer number (48825).

2⁹⁸⁷²⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 987240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1562400).

987240 is an abundant number, since it is smaller than the sum of its proper divisors (2137560).

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

987240 is a wasteful number, since it uses less digits than its factorization.

987240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466 (or 462 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 987240 is about 993.5995169081. The cubic root of 987240 is about 99.5728446477.

The spelling of 987240 in words is "nine hundred eighty-seven thousand, two hundred forty".