11381140 has 12 divisors (see below), whose sum is σ = 23900436. Its totient is φ = 4552448.

The previous prime is 11381119. The next prime is 11381147. The reversal of 11381140 is 4118311.

11381140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 5171076 + 6210064 = 2274^2 + 2492^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11381147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284509 + ... + 284548.

It is an arithmetic number, because the mean of its divisors is an integer number (1991703).

Almost surely, 2^11381140 is an apocalyptic number.

11381140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11381140 is an abundant number, since it is smaller than the sum of its proper divisors (12519296).

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

11381140 is a wasteful number, since it uses less digits than its factorization.

11381140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569066 (or 569064 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 11381140 is about 3373.5945221677. The cubic root of 11381140 is about 224.9375299822.

Adding to 11381140 its reverse (4118311), we get a palindrome (15499451).

It can be divided in two parts, 1138 and 1140, that added together give a triangular number (2278 = T₆₇).

The spelling of 11381140 in words is "eleven million, three hundred eighty-one thousand, one hundred forty".