22220824 has 8 divisors (see below), whose sum is σ = 41664060. Its totient is φ = 11110408.

The previous prime is 22220813. The next prime is 22220851. The reversal of 22220824 is 42802222.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 22220795 and 22220804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1388794 + ... + 1388809.

Almost surely, 2^22220824 is an apocalyptic number.

It is an amenable number.

22220824 is a deficient number, since it is larger than the sum of its proper divisors (19443236).

22220824 is a wasteful number, since it uses less digits than its factorization.

22220824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2777609 (or 2777605 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 22220824 is about 4713.8969017152. The cubic root of 22220824 is about 281.1383251121.

The spelling of 22220824 in words is "twenty-two million, two hundred twenty thousand, eight hundred twenty-four".