21763796 has 12 divisors (see below), whose sum is σ = 39742752. Its totient is φ = 10408728.

The previous prime is 21763787. The next prime is 21763799. The reversal of 21763796 is 69736712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21763799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118190 + ... + 118373.

It is an arithmetic number, because the mean of its divisors is an integer number (3311896).

Almost surely, 2^21763796 is an apocalyptic number.

It is an amenable number.

21763796 is a deficient number, since it is larger than the sum of its proper divisors (17978956).

21763796 is a wasteful number, since it uses less digits than its factorization.

21763796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236590 (or 236588 counting only the distinct ones).

The product of its digits is 95256, while the sum is 41.

The square root of 21763796 is about 4665.1683785261. The cubic root of 21763796 is about 279.1975151871.

The spelling of 21763796 in words is "twenty-one million, seven hundred sixty-three thousand, seven hundred ninety-six".