11403140 has 48 divisors (see below), whose sum is σ = 27965952. Its totient is φ = 3824256.

The previous prime is 11403137. The next prime is 11403149. The reversal of 11403140 is 4130411.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (11403149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5714 + ... + 7446.

It is an arithmetic number, because the mean of its divisors is an integer number (582624).

Almost surely, 2^11403140 is an apocalyptic number.

11403140 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 11403140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13982976).

11403140 is an abundant number, since it is smaller than the sum of its proper divisors (16562812).

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

11403140 is a wasteful number, since it uses less digits than its factorization.

11403140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796 (or 1794 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 11403140 is about 3376.8535650810. The cubic root of 11403140 is about 225.0823731315.

Adding to 11403140 its reverse (4130411), we get a palindrome (15533551).

The spelling of 11403140 in words is "eleven million, four hundred three thousand, one hundred forty".