11087440 has 80 divisors (see below), whose sum is σ = 31747968. Its totient is φ = 3506688.

The previous prime is 11087411. The next prime is 11087443. The reversal of 11087440 is 4478011.

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 (11087443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6519 + ... + 8041.

Almost surely, 2^11087440 is an apocalyptic number.

11087440 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 11087440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15873984).

11087440 is an abundant number, since it is smaller than the sum of its proper divisors (20660528).

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

11087440 is a wasteful number, since it uses less digits than its factorization.

11087440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1556 (or 1550 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 11087440 is about 3329.7807735645. The cubic root of 11087440 is about 222.9857418140.

The spelling of 11087440 in words is "eleven million, eighty-seven thousand, four hundred forty".