22484220 has 144 divisors (see below), whose sum is σ = 73288320. Its totient is φ = 5132160.

The previous prime is 22484213. The next prime is 22484221. The reversal of 22484220 is 2248422.

22484220 = T₁₁₉ + T₁₂₀ + ... + T₅₁₄.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22484221) 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, 137859 + ... + 138021.

Almost surely, 2^22484220 is an apocalyptic number.

22484220 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 22484220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36644160).

22484220 is an abundant number, since it is smaller than the sum of its proper divisors (50804100).

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

22484220 is a wasteful number, since it uses less digits than its factorization.

22484220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 203 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 22484220 is about 4741.7528404589. The cubic root of 22484220 is about 282.2447952359.

The spelling of 22484220 in words is "twenty-two million, four hundred eighty-four thousand, two hundred twenty".