11390140 has 12 divisors (see below), whose sum is σ = 23919336. Its totient is φ = 4556048.

The previous prime is 11390123. The next prime is 11390143. The reversal of 11390140 is 4109311.

It is a happy number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11390143) 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, 284734 + ... + 284773.

It is an arithmetic number, because the mean of its divisors is an integer number (1993278).

Almost surely, 2^11390140 is an apocalyptic number.

11390140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11390140 is an abundant number, since it is smaller than the sum of its proper divisors (12529196).

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

11390140 is a wasteful number, since it uses less digits than its factorization.

11390140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569516 (or 569514 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 11390140 is about 3374.9281473833. The cubic root of 11390140 is about 224.9968065390.

Adding to 11390140 its reverse (4109311), we get a palindrome (15499451).

The spelling of 11390140 in words is "eleven million, three hundred ninety thousand, one hundred forty".