11401218 has 12 divisors (see below), whose sum is σ = 24702678. Its totient is φ = 3800400.

The previous prime is 11401207. The next prime is 11401231. The reversal of 11401218 is 81210411.

It can be written as a sum of positive squares in only one way, i.e., 11269449 + 131769 = 3357^2 + 363^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 633401 = 11401218 / (1 + 1 + 4 + 0 + 1 + 2 + 1 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 11401218.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 316683 + ... + 316718.

Almost surely, 2^11401218 is an apocalyptic number.

11401218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11401218 is an abundant number, since it is smaller than the sum of its proper divisors (13301460).

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

11401218 is a wasteful number, since it uses less digits than its factorization.

11401218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633409 (or 633406 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 11401218 is about 3376.5689686426. The cubic root of 11401218 is about 225.0697265380.

Adding to 11401218 its reverse (81210411), we get a palindrome (92611629).

The spelling of 11401218 in words is "eleven million, four hundred one thousand, two hundred eighteen".