11897812 has 12 divisors (see below), whose sum is σ = 20927200. Its totient is φ = 5918616.

The previous prime is 11897803. The next prime is 11897827. The reversal of 11897812 is 21879811.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6678 + ... + 8269.

Almost surely, 2^11897812 is an apocalyptic number.

It is an amenable number.

11897812 is a deficient number, since it is larger than the sum of its proper divisors (9029388).

11897812 is a wasteful number, since it uses less digits than its factorization.

11897812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15150 (or 15148 counting only the distinct ones).

The product of its digits is 8064, while the sum is 37.

The square root of 11897812 is about 3449.3205127967. The cubic root of 11897812 is about 228.2911280556.

The spelling of 11897812 in words is "eleven million, eight hundred ninety-seven thousand, eight hundred twelve".