22082220 has 120 divisors (see below), whose sum is σ = 71107344. Its totient is φ = 5733504.

The previous prime is 22082213. The next prime is 22082257. The reversal of 22082220 is 2228022.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22082193 and 22082202.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 69502 + ... + 69818.

Almost surely, 2^22082220 is an apocalyptic number.

22082220 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 22082220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35553672).

22082220 is an abundant number, since it is smaller than the sum of its proper divisors (49025124).

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

22082220 is a wasteful number, since it uses less digits than its factorization.

22082220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381 (or 370 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 22082220 is about 4699.1722675382. The cubic root of 22082220 is about 280.5525652867.

The spelling of 22082220 in words is "twenty-two million, eighty-two thousand, two hundred twenty".