11286840 has 32 divisors (see below), whose sum is σ = 33860880. Its totient is φ = 3009792.

The previous prime is 11286839. The next prime is 11286853. The reversal of 11286840 is 4868211.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 11286798 and 11286807.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46909 + ... + 47148.

Almost surely, 2^11286840 is an apocalyptic number.

11286840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11286840 is an abundant number, since it is smaller than the sum of its proper divisors (22574040).

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

11286840 is a wasteful number, since it uses less digits than its factorization.

11286840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94071 (or 94067 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 11286840 is about 3359.5892606091. The cubic root of 11286840 is about 224.3145559467.

The spelling of 11286840 in words is "eleven million, two hundred eighty-six thousand, eight hundred forty".