21741676 has 12 divisors (see below), whose sum is σ = 41506920. Its totient is φ = 9882560.

The previous prime is 21741673. The next prime is 21741679. The reversal of 21741676 is 67614712.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21741673) and next prime (21741679).

It is not an unprimeable number, because it can be changed into a prime (21741673) by changing a digit.

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, 247021 + ... + 247108.

It is an arithmetic number, because the mean of its divisors is an integer number (3458910).

Almost surely, 2^21741676 is an apocalyptic number.

It is an amenable number.

21741676 is a deficient number, since it is larger than the sum of its proper divisors (19765244).

21741676 is a wasteful number, since it uses less digits than its factorization.

21741676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494144 (or 494142 counting only the distinct ones).

The product of its digits is 14112, while the sum is 34.

The square root of 21741676 is about 4662.7970146683. The cubic root of 21741676 is about 279.1028940936.

The spelling of 21741676 in words is "twenty-one million, seven hundred forty-one thousand, six hundred seventy-six".