11420440 has 32 divisors (see below), whose sum is σ = 26185680. Its totient is φ = 4481152.

The previous prime is 11420429. The next prime is 11420441. The reversal of 11420440 is 4402411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11420441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 574 + ... + 4813.

Almost surely, 2^11420440 is an apocalyptic number.

11420440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11420440 is an abundant number, since it is smaller than the sum of its proper divisors (14765240).

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

11420440 is a wasteful number, since it uses less digits than its factorization.

11420440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5451 (or 5447 counting only the distinct ones).

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

The square root of 11420440 is about 3379.4141504113. The cubic root of 11420440 is about 225.1961417227.

Adding to 11420440 its reverse (4402411), we get a palindrome (15822851).

It can be divided in two parts, 114204 and 40, that added together give a square (114244 = 338²).

The spelling of 11420440 in words is "eleven million, four hundred twenty thousand, four hundred forty".