1187284480 has 80 divisors (see below), whose sum is σ = 2893747824. Its totient is φ = 467066880.

The previous prime is 1187284463. The next prime is 1187284487. The reversal of 1187284480 is 844827811.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187284487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152359 + ... + 159961.

Almost surely, 2^1187284480 is an apocalyptic number.

1187284480 is a gapful number since it is divisible by the number (10) 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 1187284480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1446873912).

1187284480 is an abundant number, since it is smaller than the sum of its proper divisors (1706463344).

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

1187284480 is an frugal number, since it uses more digits than its factorization.

1187284480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7687 (or 7671 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 43.

The square root of 1187284480 is about 34456.9946454998. The cubic root of 1187284480 is about 1058.8918287001.

The spelling of 1187284480 in words is "one billion, one hundred eighty-seven million, two hundred eighty-four thousand, four hundred eighty".