11821672 has 16 divisors (see below), whose sum is σ = 22327200. Its totient is φ = 5867760.

The previous prime is 11821661. The next prime is 11821673. The reversal of 11821672 is 27612811.

It is a self number, because there is not a number n which added to its sum of digits gives 11821672.

It is not an unprimeable number, because it can be changed into a prime (11821673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4204 + ... + 6427.

It is an arithmetic number, because the mean of its divisors is an integer number (1395450).

Almost surely, 2^11821672 is an apocalyptic number.

It is an amenable number.

11821672 is a deficient number, since it is larger than the sum of its proper divisors (10505528).

11821672 is a wasteful number, since it uses less digits than its factorization.

11821672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10776 (or 10772 counting only the distinct ones).

The product of its digits is 1344, while the sum is 28.

The square root of 11821672 is about 3438.2658419616. The cubic root of 11821672 is about 227.8031028135.

The spelling of 11821672 in words is "eleven million, eight hundred twenty-one thousand, six hundred seventy-two".