22022000 has 240 divisors, whose sum is σ = 72037056. Its totient is φ = 6336000.

The previous prime is 22021981. The next prime is 22022009. The reversal of 22022000 is 22022.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22022009) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1693994 + ... + 1694006.

Almost surely, 2^22022000 is an apocalyptic number.

22022000 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 22022000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36018528).

22022000 is an abundant number, since it is smaller than the sum of its proper divisors (50015056).

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

22022000 is a wasteful number, since it uses less digits than its factorization.

22022000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65 (or 38 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 8.

The square root of 22022000 is about 4692.7603816943. The cubic root of 22022000 is about 280.2973032601.

Adding to 22022000 its reverse (22022), we get a palindrome (22044022).

22022000 divided by its reverse (22022) gives a cube (1000 = 10³).

It can be divided in two parts, 220 and 22000, that multiplied together give a square (4840000 = 2200²).

The spelling of 22022000 in words is "twenty-two million, twenty-two thousand".