11555340 has 72 divisors (see below), whose sum is σ = 33655440. Its totient is φ = 2962176.

The previous prime is 11555339. The next prime is 11555371. The reversal of 11555340 is 4355511.

It is a self number, because there is not a number n which added to its sum of digits gives 11555340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50346 + ... + 50574.

Almost surely, 2^11555340 is an apocalyptic number.

11555340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11555340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16827720).

11555340 is an abundant number, since it is smaller than the sum of its proper divisors (22100100).

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

11555340 is a wasteful number, since it uses less digits than its factorization.

11555340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 11555340 is about 3399.3146368055. The cubic root of 11555340 is about 226.0793571003.

It can be divided in two parts, 115 and 55340, that added together give a palindrome (55455).

The spelling of 11555340 in words is "eleven million, five hundred fifty-five thousand, three hundred forty".