21796212 has 24 divisors (see below), whose sum is σ = 50962912. Its totient is φ = 7250400.

The previous prime is 21796207. The next prime is 21796217. The reversal of 21796212 is 21269712.

It is an interprime number because it is at equal distance from previous prime (21796207) and next prime (21796217).

It is a self number, because there is not a number n which added to its sum of digits gives 21796212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21796217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5262 + ... + 8442.

Almost surely, 2^21796212 is an apocalyptic number.

It is an amenable number.

21796212 is an abundant number, since it is smaller than the sum of its proper divisors (29166700).

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

21796212 is a wasteful number, since it uses less digits than its factorization.

21796212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3759 (or 3757 counting only the distinct ones).

The product of its digits is 3024, while the sum is 30.

The square root of 21796212 is about 4668.6413441172. The cubic root of 21796212 is about 279.3360629688.

The spelling of 21796212 in words is "twenty-one million, seven hundred ninety-six thousand, two hundred twelve".