11345840 has 40 divisors (see below), whose sum is σ = 28779408. Its totient is φ = 4125440.

The previous prime is 11345837. The next prime is 11345849. The reversal of 11345840 is 4854311.

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

It is not an unprimeable number, because it can be changed into a prime (11345849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5567 + ... + 7326.

Almost surely, 2^11345840 is an apocalyptic number.

11345840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11345840 is an abundant number, since it is smaller than the sum of its proper divisors (17433568).

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

11345840 is a wasteful number, since it uses less digits than its factorization.

11345840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12917 (or 12911 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 11345840 is about 3368.3586507378. The cubic root of 11345840 is about 224.7047320303.

The spelling of 11345840 in words is "eleven million, three hundred forty-five thousand, eight hundred forty".