11402440 has 64 divisors (see below), whose sum is σ = 29612160. Its totient is φ = 3870720.

The previous prime is 11402431. The next prime is 11402449. The reversal of 11402440 is 4420411.

It is an interprime number because it is at equal distance from previous prime (11402431) and next prime (11402449).

It is not an unprimeable number, because it can be changed into a prime (11402449) 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, 53935 + ... + 54145.

It is an arithmetic number, because the mean of its divisors is an integer number (462690).

Almost surely, 2^11402440 is an apocalyptic number.

11402440 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 11402440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14806080).

11402440 is an abundant number, since it is smaller than the sum of its proper divisors (18209720).

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

11402440 is a wasteful number, since it uses less digits than its factorization.

11402440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422 (or 418 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 11402440 is about 3376.7499167099. The cubic root of 11402440 is about 225.0777673566.

Adding to 11402440 its reverse (4420411), we get a palindrome (15822851).

The spelling of 11402440 in words is "eleven million, four hundred two thousand, four hundred forty".