11215868 has 6 divisors (see below), whose sum is σ = 19627776. Its totient is φ = 5607932.

The previous prime is 11215829. The next prime is 11215889. The reversal of 11215868 is 86851211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1401980 + ... + 1401987.

It is an arithmetic number, because the mean of its divisors is an integer number (3271296).

Almost surely, 2^11215868 is an apocalyptic number.

It is an amenable number.

11215868 is a deficient number, since it is larger than the sum of its proper divisors (8411908).

11215868 is a wasteful number, since it uses less digits than its factorization.

11215868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2803971 (or 2803969 counting only the distinct ones).

The product of its digits is 3840, while the sum is 32.

The square root of 11215868 is about 3349.0100029710. The cubic root of 11215868 is about 223.8434013891.

The spelling of 11215868 in words is "eleven million, two hundred fifteen thousand, eight hundred sixty-eight".