214222644 has 240 divisors, whose sum is σ = 658627200. Its totient is φ = 60217344.

The previous prime is 214222609. The next prime is 214222649. The reversal of 214222644 is 446222412.

214222644 = T₃₉₂ + T₃₉₃ + ... + T₁₁₀₃.

214222644 is a `hidden beast` number, since 2 + 14 + 2 + 2 + 2 + 644 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214222649) by changing a digit.

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 79 ways as a sum of consecutive naturals, for example, 2406952 + ... + 2407040.

It is an arithmetic number, because the mean of its divisors is an integer number (2744280).

Almost surely, 2^214222644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 214222644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (329313600).

214222644 is an abundant number, since it is smaller than the sum of its proper divisors (444404556).

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

214222644 is a wasteful number, since it uses less digits than its factorization.

214222644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 153 counting only the distinct ones).

The product of its digits is 6144, while the sum is 27.

The square root of 214222644 is about 14636.3466753148. The cubic root of 214222644 is about 598.3497653706.

The spelling of 214222644 in words is "two hundred fourteen million, two hundred twenty-two thousand, six hundred forty-four".