11239440 has 40 divisors (see below), whose sum is σ = 34843008. Its totient is φ = 2997120.

The previous prime is 11239429. The next prime is 11239447. The reversal of 11239440 is 4493211.

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

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 11239440.

It is not an unprimeable number, because it can be changed into a prime (11239447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23176 + ... + 23655.

Almost surely, 2^11239440 is an apocalyptic number.

11239440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11239440 is an abundant number, since it is smaller than the sum of its proper divisors (23603568).

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

11239440 is a wasteful number, since it uses less digits than its factorization.

11239440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46847 (or 46841 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 11239440 is about 3352.5274048097. The cubic root of 11239440 is about 224.0001062925. Note that the first 3 decimals are identical.

The spelling of 11239440 in words is "eleven million, two hundred thirty-nine thousand, four hundred forty".