21301676 has 12 divisors (see below), whose sum is σ = 40666920. Its totient is φ = 9682560.

The previous prime is 21301613. The next prime is 21301691. The reversal of 21301676 is 67610312.

It is a super-2 number, since 2×21301676² = 907522800817952, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242021 + ... + 242108.

It is an arithmetic number, because the mean of its divisors is an integer number (3388910).

Almost surely, 2^21301676 is an apocalyptic number.

It is an amenable number.

21301676 is a deficient number, since it is larger than the sum of its proper divisors (19365244).

21301676 is a wasteful number, since it uses less digits than its factorization.

21301676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484144 (or 484142 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 21301676 is about 4615.3738743465. The cubic root of 21301676 is about 277.2072545190.

Adding to 21301676 its reverse (67610312), we get a palindrome (88911988).

The spelling of 21301676 in words is "twenty-one million, three hundred one thousand, six hundred seventy-six".