11487280 has 80 divisors (see below), whose sum is σ = 31051584. Its totient is φ = 3870720.

The previous prime is 11487269. The next prime is 11487293. The reversal of 11487280 is 8278411.

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

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, 40740 + ... + 41020.

Almost surely, 2^11487280 is an apocalyptic number.

11487280 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 11487280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15525792).

11487280 is an abundant number, since it is smaller than the sum of its proper divisors (19564304).

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

11487280 is a wasteful number, since it uses less digits than its factorization.

11487280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 368 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 11487280 is about 3389.2890109874. The cubic root of 11487280 is about 225.6346198736.

The spelling of 11487280 in words is "eleven million, four hundred eighty-seven thousand, two hundred eighty".