11281040 has 40 divisors (see below), whose sum is σ = 27373248. Its totient is φ = 4315520.

The previous prime is 11281037. The next prime is 11281051. The reversal of 11281040 is 4018211.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1226 + ... + 4905.

Almost surely, 2^11281040 is an apocalyptic number.

11281040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11281040 is an abundant number, since it is smaller than the sum of its proper divisors (16092208).

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

11281040 is a wasteful number, since it uses less digits than its factorization.

11281040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6167 (or 6161 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 11281040 is about 3358.7259489277. The cubic root of 11281040 is about 224.2761263141.

Adding to 11281040 its reverse (4018211), we get a palindrome (15299251).

The spelling of 11281040 in words is "eleven million, two hundred eighty-one thousand, forty".