21343076 has 24 divisors (see below), whose sum is σ = 38537856. Its totient is φ = 10337120.

The previous prime is 21343039. The next prime is 21343111. The reversal of 21343076 is 67034312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19586 + ... + 20646.

It is an arithmetic number, because the mean of its divisors is an integer number (1605744).

Almost surely, 2^21343076 is an apocalyptic number.

It is an amenable number.

21343076 is a deficient number, since it is larger than the sum of its proper divisors (17194780).

21343076 is a wasteful number, since it uses less digits than its factorization.

21343076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219 (or 1217 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 21343076 is about 4619.8567077346. The cubic root of 21343076 is about 277.3867232384.

Adding to 21343076 its reverse (67034312), we get a palindrome (88377388).

The spelling of 21343076 in words is "twenty-one million, three hundred forty-three thousand, seventy-six".