21796106 has 4 divisors (see below), whose sum is σ = 32694162. Its totient is φ = 10898052.

The previous prime is 21796067. The next prime is 21796129. The reversal of 21796106 is 60169712.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20566225 + 1229881 = 4535^2 + 1109^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5449025 + ... + 5449028.

Almost surely, 2^21796106 is an apocalyptic number.

21796106 is a deficient number, since it is larger than the sum of its proper divisors (10898056).

21796106 is a wasteful number, since it uses less digits than its factorization.

21796106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10898055.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 21796106 is about 4668.6299917642. The cubic root of 21796106 is about 279.3356101429.

The spelling of 21796106 in words is "twenty-one million, seven hundred ninety-six thousand, one hundred six".