22384820 has 12 divisors (see below), whose sum is σ = 47008164. Its totient is φ = 8953920.

The previous prime is 22384807. The next prime is 22384823. The reversal of 22384820 is 2848322.

It can be written as a sum of positive squares in 2 ways, for example, as 9265936 + 13118884 = 3044^2 + 3622^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22384823) 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, 559601 + ... + 559640.

It is an arithmetic number, because the mean of its divisors is an integer number (3917347).

Almost surely, 2^22384820 is an apocalyptic number.

22384820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22384820 is an abundant number, since it is smaller than the sum of its proper divisors (24623344).

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

22384820 is a wasteful number, since it uses less digits than its factorization.

22384820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119250 (or 1119248 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 22384820 is about 4731.2598744943. The cubic root of 22384820 is about 281.8282575151.

The spelling of 22384820 in words is "twenty-two million, three hundred eighty-four thousand, eight hundred twenty".