11442440 has 16 divisors (see below), whose sum is σ = 25745580. Its totient is φ = 4576960.

The previous prime is 11442419. The next prime is 11442449. The reversal of 11442440 is 4424411.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11383876 + 58564 = 3374^2 + 242^2 .

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

It is not an unprimeable number, because it can be changed into a prime (11442449) 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, 142991 + ... + 143070.

Almost surely, 2^11442440 is an apocalyptic number.

11442440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11442440 is an abundant number, since it is smaller than the sum of its proper divisors (14303140).

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

11442440 is a wasteful number, since it uses less digits than its factorization.

11442440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286072 (or 286068 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 11442440 is about 3382.6675863880. The cubic root of 11442440 is about 225.3406527117.

Adding to 11442440 its reverse (4424411), we get a palindrome (15866851).

It can be divided in two parts, 1 and 1442440, that added together give a palindrome (1442441).

The spelling of 11442440 in words is "eleven million, four hundred forty-two thousand, four hundred forty".