21796996 has 24 divisors (see below), whose sum is σ = 42192920. Its totient is φ = 9787392.

The previous prime is 21796981. The next prime is 21797003. The reversal of 21796996 is 69969712.

It can be written as a sum of positive squares in 4 ways, for example, as 2560000 + 19236996 = 1600^2 + 4386^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3741 + ... + 7588.

Almost surely, 2^21796996 is an apocalyptic number.

21796996 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

21796996 is a deficient number, since it is larger than the sum of its proper divisors (20395924).

21796996 is a wasteful number, since it uses less digits than its factorization.

21796996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11383 (or 11381 counting only the distinct ones).

The product of its digits is 367416, while the sum is 49.

The square root of 21796996 is about 4668.7253078330. The cubic root of 21796996 is about 279.3394121264.

The spelling of 21796996 in words is "twenty-one million, seven hundred ninety-six thousand, nine hundred ninety-six".