21114276 has 48 divisors (see below), whose sum is σ = 51940224. Its totient is φ = 6662656.

The previous prime is 21114257. The next prime is 21114283. The reversal of 21114276 is 67241112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30850 + ... + 31526.

It is an arithmetic number, because the mean of its divisors is an integer number (1082088).

Almost surely, 2^21114276 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21114276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25970112).

21114276 is an abundant number, since it is smaller than the sum of its proper divisors (30825948).

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

21114276 is a wasteful number, since it uses less digits than its factorization.

21114276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820 (or 818 counting only the distinct ones).

The product of its digits is 672, while the sum is 24.

The square root of 21114276 is about 4595.0273122148. The cubic root of 21114276 is about 276.3919551875.

Adding to 21114276 its reverse (67241112), we get a palindrome (88355388).

The spelling of 21114276 in words is "twenty-one million, one hundred fourteen thousand, two hundred seventy-six".