11411840 has 64 divisors (see below), whose sum is σ = 29779920. Its totient is φ = 4147200.

The previous prime is 11411821. The next prime is 11411849. The reversal of 11411840 is 4811411.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11411849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6230 + ... + 7850.

Almost surely, 2^11411840 is an apocalyptic number.

11411840 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 11411840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14889960).

11411840 is an abundant number, since it is smaller than the sum of its proper divisors (18368080).

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

11411840 is a wasteful number, since it uses less digits than its factorization.

11411840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1651 (or 1639 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 11411840 is about 3378.1415008848. The cubic root of 11411840 is about 225.1396006101.

The spelling of 11411840 in words is "eleven million, four hundred eleven thousand, eight hundred forty".