21676046 has 32 divisors (see below), whose sum is σ = 38320128. Its totient is φ = 9004320.

The previous prime is 21676033. The next prime is 21676091. The reversal of 21676046 is 64067612.

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, 97091 + ... + 97313.

It is an arithmetic number, because the mean of its divisors is an integer number (1197504).

Almost surely, 2^21676046 is an apocalyptic number.

21676046 is a deficient number, since it is larger than the sum of its proper divisors (16644082).

21676046 is a wasteful number, since it uses less digits than its factorization.

21676046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 21676046 is about 4655.7540742612. The cubic root of 21676046 is about 278.8217752390.

The spelling of 21676046 in words is "twenty-one million, six hundred seventy-six thousand, forty-six".