11421688 has 16 divisors (see below), whose sum is σ = 22675680. Its totient is φ = 5374848.

The previous prime is 11421677. The next prime is 11421689. The reversal of 11421688 is 88612411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11421689) 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, 41856 + ... + 42127.

It is an arithmetic number, because the mean of its divisors is an integer number (1417230).

Almost surely, 2^11421688 is an apocalyptic number.

It is an amenable number.

11421688 is a deficient number, since it is larger than the sum of its proper divisors (11253992).

11421688 is a wasteful number, since it uses less digits than its factorization.

11421688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84006 (or 84002 counting only the distinct ones).

The product of its digits is 3072, while the sum is 31.

The square root of 11421688 is about 3379.5987927563. The cubic root of 11421688 is about 225.2043443999.

The spelling of 11421688 in words is "eleven million, four hundred twenty-one thousand, six hundred eighty-eight".