21346676 has 12 divisors (see below), whose sum is σ = 40230372. Its totient is φ = 9852288.

The previous prime is 21346673. The next prime is 21346681. The reversal of 21346676 is 67664312.

It can be written as a sum of positive squares in 2 ways, for example, as 10627600 + 10719076 = 3260^2 + 3274^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21346673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205205 + ... + 205308.

It is an arithmetic number, because the mean of its divisors is an integer number (3352531).

Almost surely, 2^21346676 is an apocalyptic number.

21346676 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

21346676 is a deficient number, since it is larger than the sum of its proper divisors (18883696).

21346676 is a wasteful number, since it uses less digits than its factorization.

21346676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410530 (or 410528 counting only the distinct ones).

The product of its digits is 36288, while the sum is 35.

The square root of 21346676 is about 4620.2463137803. The cubic root of 21346676 is about 277.4023182423.

It can be divided in two parts, 21346 and 676, that added together give a palindrome (22022).

The spelling of 21346676 in words is "twenty-one million, three hundred forty-six thousand, six hundred seventy-six".