21114366 has 32 divisors (see below), whose sum is σ = 51975168. Its totient is φ = 5568480.

The previous prime is 21114361. The next prime is 21114367. The reversal of 21114366 is 66341112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21114361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18790 + ... + 19881.

It is an arithmetic number, because the mean of its divisors is an integer number (1624224).

Almost surely, 2^21114366 is an apocalyptic number.

21114366 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

21114366 is an abundant number, since it is smaller than the sum of its proper divisors (30860802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21114366 is a wasteful number, since it uses less digits than its factorization.

21114366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38696.

The product of its digits is 864, while the sum is 24.

The square root of 21114366 is about 4595.0371053997. The cubic root of 21114366 is about 276.3923478955.

Adding to 21114366 its reverse (66341112), we get a palindrome (87455478).

The spelling of 21114366 in words is "twenty-one million, one hundred fourteen thousand, three hundred sixty-six".