22337820 has 72 divisors (see below), whose sum is σ = 68215056. Its totient is φ = 5916672.

The previous prime is 22337797. The next prime is 22337827. The reversal of 22337820 is 2873322.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22337827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34419 + ... + 35061.

Almost surely, 2^22337820 is an apocalyptic number.

22337820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22337820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34107528).

22337820 is an abundant number, since it is smaller than the sum of its proper divisors (45877236).

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

22337820 is a wasteful number, since it uses less digits than its factorization.

22337820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851 (or 846 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 22337820 is about 4726.2903000133. The cubic root of 22337820 is about 281.6308736112.

The spelling of 22337820 in words is "twenty-two million, three hundred thirty-seven thousand, eight hundred twenty".