21496696 has 16 divisors (see below), whose sum is σ = 43407000. Its totient is φ = 9921504.

The previous prime is 21496679. The next prime is 21496703. The reversal of 21496696 is 69669412.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103246 + ... + 103453.

Almost surely, 2^21496696 is an apocalyptic number.

21496696 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

21496696 is an abundant number, since it is smaller than the sum of its proper divisors (21910304).

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

21496696 is a wasteful number, since it uses less digits than its factorization.

21496696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206718 (or 206714 counting only the distinct ones).

The product of its digits is 139968, while the sum is 43.

The square root of 21496696 is about 4636.4529545764. The cubic root of 21496696 is about 278.0506437763.

The spelling of 21496696 in words is "twenty-one million, four hundred ninety-six thousand, six hundred ninety-six".