76222220 has 96 divisors (see below), whose sum is σ = 178573248. Its totient is φ = 27205632.

The previous prime is 76222217. The next prime is 76222247. The reversal of 76222220 is 2222267.

76222220 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

76222220 is strictly pandigital in base 9.

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 918299 + ... + 918381.

It is an arithmetic number, because the mean of its divisors is an integer number (1860138).

Almost surely, 2^76222220 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 76222220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89286624).

76222220 is an abundant number, since it is smaller than the sum of its proper divisors (102351028).

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

76222220 is a wasteful number, since it uses less digits than its factorization.

76222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219 (or 217 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 76222220 is about 8730.5337752053. The cubic root of 76222220 is about 423.9948008737.

Adding to 76222220 its reverse (2222267), we get a palindrome (78444487).

The spelling of 76222220 in words is "seventy-six million, two hundred twenty-two thousand, two hundred twenty".