11404840 has 16 divisors (see below), whose sum is σ = 25660980. Its totient is φ = 4561920.

The previous prime is 11404837. The next prime is 11404853. The reversal of 11404840 is 4840411.

It can be written as a sum of positive squares in 2 ways, for example, as 9998244 + 1406596 = 3162^2 + 1186^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142521 + ... + 142600.

Almost surely, 2^11404840 is an apocalyptic number.

11404840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11404840 is an abundant number, since it is smaller than the sum of its proper divisors (14256140).

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

11404840 is a wasteful number, since it uses less digits than its factorization.

11404840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285132 (or 285128 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 11404840 is about 3377.1052693098. The cubic root of 11404840 is about 225.0935577999.

The spelling of 11404840 in words is "eleven million, four hundred four thousand, eight hundred forty".