21326676 has 48 divisors (see below), whose sum is σ = 57125376. Its totient is φ = 6066144.

The previous prime is 21326663. The next prime is 21326699. The reversal of 21326676 is 67662312.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 25375 + ... + 26201.

It is an arithmetic number, because the mean of its divisors is an integer number (1190112).

Almost surely, 2^21326676 is an apocalyptic number.

It is an amenable number.

21326676 is an abundant number, since it is smaller than the sum of its proper divisors (35798700).

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

21326676 is a wasteful number, since it uses less digits than its factorization.

21326676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148 (or 1146 counting only the distinct ones).

The product of its digits is 18144, while the sum is 33.

The square root of 21326676 is about 4618.0814198106. The cubic root of 21326676 is about 277.3156571317.

Adding to 21326676 its reverse (67662312), we get a palindrome (88988988).

The spelling of 21326676 in words is "twenty-one million, three hundred twenty-six thousand, six hundred seventy-six".