11345640 has 32 divisors (see below), whose sum is σ = 34037280. Its totient is φ = 3025472.

The previous prime is 11345629. The next prime is 11345683. The reversal of 11345640 is 4654311.

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 11345640.

It is an unprimeable number.

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, 47154 + ... + 47393.

It is an arithmetic number, because the mean of its divisors is an integer number (1063665).

Almost surely, 2^11345640 is an apocalyptic number.

11345640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11345640 is an abundant number, since it is smaller than the sum of its proper divisors (22691640).

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

11345640 is a wasteful number, since it uses less digits than its factorization.

11345640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94561 (or 94557 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 11345640 is about 3368.3289625570. The cubic root of 11345640 is about 224.7034116870.

Adding to 11345640 its reverse (4654311), we get a palindrome (15999951).

It can be divided in two parts, 113 and 45640, that added together give a triangular number (45753 = T₃₀₂).

The spelling of 11345640 in words is "eleven million, three hundred forty-five thousand, six hundred forty".