11421916 has 18 divisors (see below), whose sum is σ = 21971600. Its totient is φ = 5191560.

The previous prime is 11421913. The next prime is 11421947. The reversal of 11421916 is 61912411.

11421916 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11421916² = 260920330222112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11421913) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11316 + ... + 12283.

Almost surely, 2^11421916 is an apocalyptic number.

It is an amenable number.

11421916 is a deficient number, since it is larger than the sum of its proper divisors (10549684).

11421916 is a wasteful number, since it uses less digits than its factorization.

11421916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23625 (or 23612 counting only the distinct ones).

The product of its digits is 432, while the sum is 25.

The square root of 11421916 is about 3379.6325244026. The cubic root of 11421916 is about 225.2058429014.

The spelling of 11421916 in words is "eleven million, four hundred twenty-one thousand, nine hundred sixteen".