21341276 has 12 divisors (see below), whose sum is σ = 40742520. Its totient is φ = 9700560.

The previous prime is 21341249. The next prime is 21341317. The reversal of 21341276 is 67214312.

It is a super-2 number, since 2×21341276² = 910900122616352, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242471 + ... + 242558.

It is an arithmetic number, because the mean of its divisors is an integer number (3395210).

Almost surely, 2^21341276 is an apocalyptic number.

It is an amenable number.

21341276 is a deficient number, since it is larger than the sum of its proper divisors (19401244).

21341276 is a wasteful number, since it uses less digits than its factorization.

21341276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485044 (or 485042 counting only the distinct ones).

The product of its digits is 2016, while the sum is 26.

The square root of 21341276 is about 4619.6618923900. The cubic root of 21341276 is about 277.3789250788.

Adding to 21341276 its reverse (67214312), we get a palindrome (88555588).

The spelling of 21341276 in words is "twenty-one million, three hundred forty-one thousand, two hundred seventy-six".