11420238 has 8 divisors (see below), whose sum is σ = 22840488. Its totient is φ = 3806744.

The previous prime is 11420203. The next prime is 11420239. The reversal of 11420238 is 83202411.

It is a sphenic number, since it is the product of 3 distinct primes.

11420238 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11420239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 951681 + ... + 951692.

It is an arithmetic number, because the mean of its divisors is an integer number (2855061).

Almost surely, 2^11420238 is an apocalyptic number.

11420238 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11420238 is a wasteful number, since it uses less digits than its factorization.

11420238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1903378.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 11420238 is about 3379.3842634421. The cubic root of 11420238 is about 225.1948139896.

Adding to 11420238 its reverse (83202411), we get a palindrome (94622649).

The spelling of 11420238 in words is "eleven million, four hundred twenty thousand, two hundred thirty-eight".