220222840 has 32 divisors (see below), whose sum is σ = 496248480. Its totient is φ = 87956352.

The previous prime is 220222819. The next prime is 220222841. The reversal of 220222840 is 48222022.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220222841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25294 + ... + 32866.

It is an arithmetic number, because the mean of its divisors is an integer number (15507765).

Almost surely, 2^220222840 is an apocalyptic number.

220222840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220222840 is an abundant number, since it is smaller than the sum of its proper divisors (276025640).

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

220222840 is a wasteful number, since it uses less digits than its factorization.

220222840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8311 (or 8307 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 220222840 is about 14839.9070077949. The cubic root of 220222840 is about 603.8848295824.

Adding to 220222840 its reverse (48222022), we get a palindrome (268444862).

The spelling of 220222840 in words is "two hundred twenty million, two hundred twenty-two thousand, eight hundred forty".