22239846 has 48 divisors (see below), whose sum is σ = 50791104. Its totient is φ = 7291944.

The previous prime is 22239821. The next prime is 22239851. The reversal of 22239846 is 64893222.

22239846 is a `hidden beast` number, since 222 + 398 + 46 = 666.

It is a super-2 number, since 2×22239846² = 989221500207432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22239846.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32221 + ... + 32903.

It is an arithmetic number, because the mean of its divisors is an integer number (1058148).

Almost surely, 2^22239846 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22239846, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25395552).

22239846 is an abundant number, since it is smaller than the sum of its proper divisors (28551258).

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

22239846 is an equidigital number, since it uses as much as digits as its factorization.

22239846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767 (or 755 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 22239846 is about 4715.9141213555. The cubic root of 22239846 is about 281.2185244776.

The spelling of 22239846 in words is "twenty-two million, two hundred thirty-nine thousand, eight hundred forty-six".