11289740 has 48 divisors (see below), whose sum is σ = 29562624. Its totient is φ = 3518400.

The previous prime is 11289731. The next prime is 11289769. The reversal of 11289740 is 4798211.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 11289697 and 11289706.

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, 2126 + ... + 5205.

It is an arithmetic number, because the mean of its divisors is an integer number (615888).

Almost surely, 2^11289740 is an apocalyptic number.

11289740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11289740 is an abundant number, since it is smaller than the sum of its proper divisors (18272884).

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

11289740 is a wasteful number, since it uses less digits than its factorization.

11289740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7358 (or 7356 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 11289740 is about 3360.0208332687. The cubic root of 11289740 is about 224.3337658261. Note that the first 3 decimals are identical.

The spelling of 11289740 in words is "eleven million, two hundred eighty-nine thousand, seven hundred forty".